Stephane Boussuge

Hi Julio
 
that score use the pcs 7-33 as pitch material.
It use also a vector mapping on "reservoirs" of motives for the music generation.
All this was done on the fly on a draft file.
Once done, i've used pprint for pprint the score on my finale opmo score file and add some few treatment for creating the coda.
 
Score attached to this post.
 
All the best
 
S.
prelpia171218.opmo

Hi Julio
 
that score use the pcs 7-33 as pitch material.
It use also a vector mapping on "reservoirs" of motives for the music generation.
All this was done on the fly on a draft file.
Once done, i've used pprint for pprint the score on my finale opmo score file and add some few treatment for creating the coda.
 
Score attached to this post.
 
All the best
 
S.
prelpia171218.opmo

Here's a small Prelude for Piano.
 

 
SB.

Here's a small Prelude for Piano.
 

 
SB.

The function name length-rest-weight has changed to length-weight.
I fixed the score of above as well.

New short piano piece from "3 Pièces pour Piano".
 

stephaneboussuge · Pattern for Piano  
SB.
 
 

You can use pitch-class within PATTERN-MAP function:
(pattern-map   '(((0 1 9 4 2 5) (0 4 2 1 9 5))    ((11 8 10 3 7 6) (10 8 11 3 7 6)))  '((c6 cs4 a4 e3 d6 f4) (b4 gs3 bb4 eb4 g5 fs6))   :pcs t) => ((c6 e4 d4 cs3 a6 f4)     (bb4 gs3 b4 eb4 g5 fs6))  
 

You can use pitch-class within pattern-map function:
(pattern-map   '(((0 1 9 4 2 5) (0 4 2 1 9 5))    ((11 8 10 3 7 6) (10 8 11 3 7 6)))  '((c6 cs4 a4 e3 d6 f4) (b4 gs3 bb4 eb4 g5 fs6))   :pcs t) => ((c6 e4 d4 cs3 a6 f4)     (bb4 gs3 b4 eb4 g5 fs6))  
 

May be
Expansion-series functions
pitch-repeat-transpose (re-incarnation 🙂
trim with gen-trim
length-diminution or augmentation
fragmentation with pitch-fragment
gen-transition or gen-morph etc..
use weighted function to add more and more rest in music (length-weight)
use text-to-pitch functions to create pitch structures based on the Death word or a death poem
create vectors who go from top to bottom (or reverse) and use them for rhythm, pitch etc... (gen-tendency)
the possibilities are endless 🙂
 
SB.
 
 
 
 
 

May be
Expansion-series functions
pitch-repeat-transpose (re-incarnation 🙂
trim with gen-trim
length-diminution or augmentation
fragmentation with pitch-fragment
gen-transition or gen-morph etc..
use weighted function to add more and more rest in music (length-weight)
use text-to-pitch functions to create pitch structures based on the Death word or a death poem
create vectors who go from top to bottom (or reverse) and use them for rhythm, pitch etc... (gen-tendency)
the possibilities are endless 🙂
 
SB.
 
 
 
 
 

originally, i've made gen-chord3 with JP for using in this top to bottom approach. 
what  is called root in gen-chord3 parameters was not thinked by me originaly as "root" but more cantus note on with to add other notes (below or not). 
 
S.
But naturally, the gen-chord3 function is not conditionnal, so we have to think about something else but i think you can do that with pattern-match function.
 
S.
or also with def-case.
 

(setf sequence '((t s t)                  (3q 3e_s. t)                  (5h 5h 5q_7q 7q 7q 7q 7q 7q 7q_5q 5h 5h)                  (t s._3e 3q))) (gen-retrograde sequence) => ((t s t)     (t s._3e 3q)     (5h 5h 5q_7q 7q 7q 7q 7q 7q 7q_5q 5h 5h)     (3q 3e_s. t))
 
best, JP

Will be fixed in the next update. The problem not the ratios but the tied lengths. What we need to do is to reverse the order of tied lengths:
5q_7q = 7q_5q

(gen-retrograde durations1 :omn t) => ((t s t) (t 13/96 3q) (5h = 3/35 7q = = = = 3/35 5h =) (3q 13/96 t) (t s t)) S.

For span-ignore-pause, use the function gen-swallow
 
SB.
 
 

i think it's good and important to see that opusmodus is not a notation software (like sibelius/finale/dorico...). the potential is rightly in another area and i believe that it is important to keep the basic idea of opusmodus in focus (it's important to have restrictions/limitations) - and i think the development team is very aware of that .
you can not have everything, but what is possible should be very very smart in its kind.
 
the longer i work with opusmodus, the more i realize, for what i can use it ...and when I have to switch to another platform. 
and because it is so open, it is then possible for me to find solutions for my specific needs, by being able to program myself and not simply having to do what the existing tools / functions allow.
 
okay i admit i'm a big fan of opusmodus, although i do not even compose with it but can try/simulate basic ideas of my work - doing abstract/new things and see what happens - like working in an LAB 🙂
 

You may use text attributes.
 
S.

Here's a small piano study using my new function make-chord-if-length and few others from my personal lib.
Enjoy 😉
SB.
 
;;; UTILITIES ;;; ======================================== ;;; GEN-PITCH-LINE ;;; Fonction de génération de hauteurs basées sur une conversion de vecteur de bruit ;;; avec un grand choix de type de bruit, taux de compression du vecteur, filtrage des répétitions et ambitus. (defun gen-pitch-line (nb-pitch &key (compress 1) (ambitus '(c4 c6)) seed filter-repeat (type :white)) (setf seed (rnd-seed seed)) (let (pitches) (do-verbose ("gen-pitch-line :seed ~s" seed) (labels ((white-or-pink (nb-pitch seed type) (if (eq type ':pink) (gen-pink-noise nb-pitch :seed seed) (gen-white-noise nb-pitch :seed seed :type (if (eq type ':white) :normal type)))) (process (nb-pitch &key (compress 1) (ambitus '(c4 c6)) seed filter-repeat type) (setf pitches (vector-to-pitch ambitus (vector-smooth compress (white-or-pink nb-pitch seed type)))) (when filter-repeat (setf pitches (gen-trim nb-pitch (filter-repeat filter-repeat pitches)))) pitches) ) (process nb-pitch :compress compress :ambitus ambitus :filter-repeat filter-repeat :seed (seed) :type type))))) #| USAGE (gen-pitch-line 24 :compress 0.42 :type :white :filter-repeat 1) (gen-pitch-line 24 :compress 0.42 :type :pink :filter-repeat 1) (gen-pitch-line 24 :compress 0.42 :type :extreme :filter-repeat 1) (gen-eval 8 '(make-omn :pitch (gen-pitch-line 24 :compress 0.42 :type :white :filter-repeat 1) :length (euclidean-rhythm 16 1 16 's :type 2) ) :seed 33) |# ;;; OMN-ARTICULATION-PROCESSOR (defun omn-articulation-processor (map omn-mat &key (section nil)) (do-verbose ("omn-articulation-processor") (let ((artic (pattern-map map (omn :length omn-mat) :otherwise '(default) :section section)) ) (omn-replace :articulation artic omn-mat) ))) ;;; MAKE-CHORD-IF-LENGTH (defun make-chord-if-length-aux (omn &key (test #'>) (length-val 1/8) (interval-list '((4 7)(7 12))) (cycle t)(relative nil) seed) (setf seed (rnd-seed seed)) (let ((s-events (single-events omn))) (loop for e in s-events when (funcall test (omn-encode (first e)) length-val) append (omn-replace :pitch (gen-chord3 (list (second e)) interval-list :cycle cycle :relative relative :seed (seed)) e ) else append e))) (defun make-chord-if-length (omn &key (test #'>) (length-val 1/8) (interval-list '((4 7)(7 12)))(cycle nil)(relative nil) seed) (setf seed (rnd-seed seed)) (do-verbose ("make-chord-if-length :seed ~s :length-val ~s :interval-list ~s :cycle ~s :relative ~s" seed length-val interval-list cycle relative) (let ((test-fn (case test (> #'>) (< #'<) (= #'=) (otherwise test)))) (if (listp (car omn)) (mapcar #'(lambda (x) (make-chord-if-length-aux x :test test-fn :length-val (omn-encode length-val) :interval-list interval-list :cycle cycle :relative relative :seed (seed))) omn) (make-chord-if-length-aux omn :test test-fn :length-val (omn-encode length-val) :interval-list interval-list :cycle cycle :relative relative :seed (seed)))))) ;;; ======================================== ;;;--------------------------------------------------------- ;;; Parameters ;;;--------------------------------------------------------- (setf size 24) (setf flow1 (pitch-transpose -7 (make-omn :pitch (gen-pitch-line 128 :compress 0.33 :seed 729353) :length (rnd-sample size '((s s s s s s s s -q) (e e h)(h.)(q q e e) (e e q q)(s s s s q q) (q s s s s q)(s s e -e s s q) ) :seed 729355) :velocity (rnd-sample size '((ppp)(pp)(p)(mp)(mf)) :seed 729356) ))) (setf flow2 (pitch-transpose -4 (make-omn :pitch (gen-pitch-line 128 :compress 0.73 :seed 353) :length (rnd-sample size '((h. ) (q. e q)(h.)(q q q) (h -q)(e e h) (h e e) ) :seed 729355) :velocity (rnd-sample size '((ppp)(pp)(p)) :seed 729356) ))) (setf flow3 (pitch-transpose -7 (make-omn :pitch (gen-pitch-line 128 :compress 0.33 :seed 7353) :length (rnd-sample size '((s s s s s s s s -q) (e e h)(h.)(q q e e) (e e q q)(s s s s q q) (q s s s s q)(s s e -e s s q) ) :seed 7255) :velocity (rnd-sample size '((ppp)(pp)(p)(mp)(mf)) :seed 7256) ))) ;;; Articulation remap (setf map '(((1/16 1/16 1/16 1/16)(leg leg leg default)))) (setf with-ch1 (omn-articulation-processor map (pitch-ornament (make-chord-if-length flow1 :interval-list '((-7 -19 3 9)(-4 -16 3 7) (-5 -17 4 12)(-3 -15 7)) :cycle nil :relative t :seed 729358 )))) (setf with-ch2 (omn-articulation-processor map (pitch-ornament (make-chord-if-length flow2 :interval-list '((-7 -19 3 9)(-4 -16 3 7) (-5 -17 4 12)(-3 -15 7)) :cycle nil :relative t :seed 729358 )))) (setf with-ch3 (omn-articulation-processor map (pitch-ornament (make-chord-if-length flow3 :interval-list '((-7 -19 3 9)(-4 -16 3 7) (-5 -17 4 12)(-3 -15 7)) :cycle nil :relative t :seed 729358 )))) ;;; SCORE ASSEMBLY (setf piano-rh (omn-replace :articulation '(default leg leg leg default fermata-l) (ambitus-filter '(c4 c8) (assemble-seq with-ch1 with-ch2 with-ch3)) :section '(71))) (setf piano-lh (omn-replace :articulation '(default fermata-l) (ambitus-filter '(c0 b3) (assemble-seq with-ch1 with-ch2 with-ch3)) :section '(71))) ;;;--------------------------------------------------------- ;;; Score and Layout ;;;--------------------------------------------------------- (def-score Study (:title "Mcil-study" :composer "S.Boussuge" :copyright "Copyright © 2018 s.boussuge " :key-signature 'chromatic :time-signature '((1 1 1) 4) :tempo 82 :layout (piano-solo-layout 'piano-rh 'piano-lh)) (piano-rh :omn piano-rh :channel 1 :sound 'gm :program 'acoustic-grand-piano :volume 100 :pan 64 :controllers (91 '(48)) ) (piano-lh :omn piano-lh :channel 2 :controllers (91 '(48)) ) )  

Here's a small piano study using my new function make-chord-if-length and few others from my personal lib.
Enjoy 😉
SB.
 
;;; UTILITIES ;;; ======================================== ;;; GEN-PITCH-LINE ;;; Fonction de génération de hauteurs basées sur une conversion de vecteur de bruit ;;; avec un grand choix de type de bruit, taux de compression du vecteur, filtrage des répétitions et ambitus. (defun gen-pitch-line (nb-pitch &key (compress 1) (ambitus '(c4 c6)) seed filter-repeat (type :white)) (setf seed (rnd-seed seed)) (let (pitches) (do-verbose ("gen-pitch-line :seed ~s" seed) (labels ((white-or-pink (nb-pitch seed type) (if (eq type ':pink) (gen-pink-noise nb-pitch :seed seed) (gen-white-noise nb-pitch :seed seed :type (if (eq type ':white) :normal type)))) (process (nb-pitch &key (compress 1) (ambitus '(c4 c6)) seed filter-repeat type) (setf pitches (vector-to-pitch ambitus (vector-smooth compress (white-or-pink nb-pitch seed type)))) (when filter-repeat (setf pitches (gen-trim nb-pitch (filter-repeat filter-repeat pitches)))) pitches) ) (process nb-pitch :compress compress :ambitus ambitus :filter-repeat filter-repeat :seed (seed) :type type))))) #| USAGE (gen-pitch-line 24 :compress 0.42 :type :white :filter-repeat 1) (gen-pitch-line 24 :compress 0.42 :type :pink :filter-repeat 1) (gen-pitch-line 24 :compress 0.42 :type :extreme :filter-repeat 1) (gen-eval 8 '(make-omn :pitch (gen-pitch-line 24 :compress 0.42 :type :white :filter-repeat 1) :length (euclidean-rhythm 16 1 16 's :type 2) ) :seed 33) |# ;;; OMN-ARTICULATION-PROCESSOR (defun omn-articulation-processor (map omn-mat &key (section nil)) (do-verbose ("omn-articulation-processor") (let ((artic (pattern-map map (omn :length omn-mat) :otherwise '(default) :section section)) ) (omn-replace :articulation artic omn-mat) ))) ;;; MAKE-CHORD-IF-LENGTH (defun make-chord-if-length-aux (omn &key (test #'>) (length-val 1/8) (interval-list '((4 7)(7 12))) (cycle t)(relative nil) seed) (setf seed (rnd-seed seed)) (let ((s-events (single-events omn))) (loop for e in s-events when (funcall test (omn-encode (first e)) length-val) append (omn-replace :pitch (gen-chord3 (list (second e)) interval-list :cycle cycle :relative relative :seed (seed)) e ) else append e))) (defun make-chord-if-length (omn &key (test #'>) (length-val 1/8) (interval-list '((4 7)(7 12)))(cycle nil)(relative nil) seed) (setf seed (rnd-seed seed)) (do-verbose ("make-chord-if-length :seed ~s :length-val ~s :interval-list ~s :cycle ~s :relative ~s" seed length-val interval-list cycle relative) (let ((test-fn (case test (> #'>) (< #'<) (= #'=) (otherwise test)))) (if (listp (car omn)) (mapcar #'(lambda (x) (make-chord-if-length-aux x :test test-fn :length-val (omn-encode length-val) :interval-list interval-list :cycle cycle :relative relative :seed (seed))) omn) (make-chord-if-length-aux omn :test test-fn :length-val (omn-encode length-val) :interval-list interval-list :cycle cycle :relative relative :seed (seed)))))) ;;; ======================================== ;;;--------------------------------------------------------- ;;; Parameters ;;;--------------------------------------------------------- (setf size 24) (setf flow1 (pitch-transpose -7 (make-omn :pitch (gen-pitch-line 128 :compress 0.33 :seed 729353) :length (rnd-sample size '((s s s s s s s s -q) (e e h)(h.)(q q e e) (e e q q)(s s s s q q) (q s s s s q)(s s e -e s s q) ) :seed 729355) :velocity (rnd-sample size '((ppp)(pp)(p)(mp)(mf)) :seed 729356) ))) (setf flow2 (pitch-transpose -4 (make-omn :pitch (gen-pitch-line 128 :compress 0.73 :seed 353) :length (rnd-sample size '((h. ) (q. e q)(h.)(q q q) (h -q)(e e h) (h e e) ) :seed 729355) :velocity (rnd-sample size '((ppp)(pp)(p)) :seed 729356) ))) (setf flow3 (pitch-transpose -7 (make-omn :pitch (gen-pitch-line 128 :compress 0.33 :seed 7353) :length (rnd-sample size '((s s s s s s s s -q) (e e h)(h.)(q q e e) (e e q q)(s s s s q q) (q s s s s q)(s s e -e s s q) ) :seed 7255) :velocity (rnd-sample size '((ppp)(pp)(p)(mp)(mf)) :seed 7256) ))) ;;; Articulation remap (setf map '(((1/16 1/16 1/16 1/16)(leg leg leg default)))) (setf with-ch1 (omn-articulation-processor map (pitch-ornament (make-chord-if-length flow1 :interval-list '((-7 -19 3 9)(-4 -16 3 7) (-5 -17 4 12)(-3 -15 7)) :cycle nil :relative t :seed 729358 )))) (setf with-ch2 (omn-articulation-processor map (pitch-ornament (make-chord-if-length flow2 :interval-list '((-7 -19 3 9)(-4 -16 3 7) (-5 -17 4 12)(-3 -15 7)) :cycle nil :relative t :seed 729358 )))) (setf with-ch3 (omn-articulation-processor map (pitch-ornament (make-chord-if-length flow3 :interval-list '((-7 -19 3 9)(-4 -16 3 7) (-5 -17 4 12)(-3 -15 7)) :cycle nil :relative t :seed 729358 )))) ;;; SCORE ASSEMBLY (setf piano-rh (omn-replace :articulation '(default leg leg leg default fermata-l) (ambitus-filter '(c4 c8) (assemble-seq with-ch1 with-ch2 with-ch3)) :section '(71))) (setf piano-lh (omn-replace :articulation '(default fermata-l) (ambitus-filter '(c0 b3) (assemble-seq with-ch1 with-ch2 with-ch3)) :section '(71))) ;;;--------------------------------------------------------- ;;; Score and Layout ;;;--------------------------------------------------------- (def-score Study (:title "Mcil-study" :composer "S.Boussuge" :copyright "Copyright © 2018 s.boussuge " :key-signature 'chromatic :time-signature '((1 1 1) 4) :tempo 82 :layout (piano-solo-layout 'piano-rh 'piano-lh)) (piano-rh :omn piano-rh :channel 1 :sound 'gm :program 'acoustic-grand-piano :volume 100 :pan 64 :controllers (91 '(48)) ) (piano-lh :omn piano-lh :channel 2 :controllers (91 '(48)) ) )  

Here's a small piano study using my new function make-chord-if-length and few others from my personal lib.
Enjoy 😉
SB.
 
;;; UTILITIES ;;; ======================================== ;;; GEN-PITCH-LINE ;;; Fonction de génération de hauteurs basées sur une conversion de vecteur de bruit ;;; avec un grand choix de type de bruit, taux de compression du vecteur, filtrage des répétitions et ambitus. (defun gen-pitch-line (nb-pitch &key (compress 1) (ambitus '(c4 c6)) seed filter-repeat (type :white)) (setf seed (rnd-seed seed)) (let (pitches) (do-verbose ("gen-pitch-line :seed ~s" seed) (labels ((white-or-pink (nb-pitch seed type) (if (eq type ':pink) (gen-pink-noise nb-pitch :seed seed) (gen-white-noise nb-pitch :seed seed :type (if (eq type ':white) :normal type)))) (process (nb-pitch &key (compress 1) (ambitus '(c4 c6)) seed filter-repeat type) (setf pitches (vector-to-pitch ambitus (vector-smooth compress (white-or-pink nb-pitch seed type)))) (when filter-repeat (setf pitches (gen-trim nb-pitch (filter-repeat filter-repeat pitches)))) pitches) ) (process nb-pitch :compress compress :ambitus ambitus :filter-repeat filter-repeat :seed (seed) :type type))))) #| USAGE (gen-pitch-line 24 :compress 0.42 :type :white :filter-repeat 1) (gen-pitch-line 24 :compress 0.42 :type :pink :filter-repeat 1) (gen-pitch-line 24 :compress 0.42 :type :extreme :filter-repeat 1) (gen-eval 8 '(make-omn :pitch (gen-pitch-line 24 :compress 0.42 :type :white :filter-repeat 1) :length (euclidean-rhythm 16 1 16 's :type 2) ) :seed 33) |# ;;; OMN-ARTICULATION-PROCESSOR (defun omn-articulation-processor (map omn-mat &key (section nil)) (do-verbose ("omn-articulation-processor") (let ((artic (pattern-map map (omn :length omn-mat) :otherwise '(default) :section section)) ) (omn-replace :articulation artic omn-mat) ))) ;;; MAKE-CHORD-IF-LENGTH (defun make-chord-if-length-aux (omn &key (test #'>) (length-val 1/8) (interval-list '((4 7)(7 12))) (cycle t)(relative nil) seed) (setf seed (rnd-seed seed)) (let ((s-events (single-events omn))) (loop for e in s-events when (funcall test (omn-encode (first e)) length-val) append (omn-replace :pitch (gen-chord3 (list (second e)) interval-list :cycle cycle :relative relative :seed (seed)) e ) else append e))) (defun make-chord-if-length (omn &key (test #'>) (length-val 1/8) (interval-list '((4 7)(7 12)))(cycle nil)(relative nil) seed) (setf seed (rnd-seed seed)) (do-verbose ("make-chord-if-length :seed ~s :length-val ~s :interval-list ~s :cycle ~s :relative ~s" seed length-val interval-list cycle relative) (let ((test-fn (case test (> #'>) (< #'<) (= #'=) (otherwise test)))) (if (listp (car omn)) (mapcar #'(lambda (x) (make-chord-if-length-aux x :test test-fn :length-val (omn-encode length-val) :interval-list interval-list :cycle cycle :relative relative :seed (seed))) omn) (make-chord-if-length-aux omn :test test-fn :length-val (omn-encode length-val) :interval-list interval-list :cycle cycle :relative relative :seed (seed)))))) ;;; ======================================== ;;;--------------------------------------------------------- ;;; Parameters ;;;--------------------------------------------------------- (setf size 24) (setf flow1 (pitch-transpose -7 (make-omn :pitch (gen-pitch-line 128 :compress 0.33 :seed 729353) :length (rnd-sample size '((s s s s s s s s -q) (e e h)(h.)(q q e e) (e e q q)(s s s s q q) (q s s s s q)(s s e -e s s q) ) :seed 729355) :velocity (rnd-sample size '((ppp)(pp)(p)(mp)(mf)) :seed 729356) ))) (setf flow2 (pitch-transpose -4 (make-omn :pitch (gen-pitch-line 128 :compress 0.73 :seed 353) :length (rnd-sample size '((h. ) (q. e q)(h.)(q q q) (h -q)(e e h) (h e e) ) :seed 729355) :velocity (rnd-sample size '((ppp)(pp)(p)) :seed 729356) ))) (setf flow3 (pitch-transpose -7 (make-omn :pitch (gen-pitch-line 128 :compress 0.33 :seed 7353) :length (rnd-sample size '((s s s s s s s s -q) (e e h)(h.)(q q e e) (e e q q)(s s s s q q) (q s s s s q)(s s e -e s s q) ) :seed 7255) :velocity (rnd-sample size '((ppp)(pp)(p)(mp)(mf)) :seed 7256) ))) ;;; Articulation remap (setf map '(((1/16 1/16 1/16 1/16)(leg leg leg default)))) (setf with-ch1 (omn-articulation-processor map (pitch-ornament (make-chord-if-length flow1 :interval-list '((-7 -19 3 9)(-4 -16 3 7) (-5 -17 4 12)(-3 -15 7)) :cycle nil :relative t :seed 729358 )))) (setf with-ch2 (omn-articulation-processor map (pitch-ornament (make-chord-if-length flow2 :interval-list '((-7 -19 3 9)(-4 -16 3 7) (-5 -17 4 12)(-3 -15 7)) :cycle nil :relative t :seed 729358 )))) (setf with-ch3 (omn-articulation-processor map (pitch-ornament (make-chord-if-length flow3 :interval-list '((-7 -19 3 9)(-4 -16 3 7) (-5 -17 4 12)(-3 -15 7)) :cycle nil :relative t :seed 729358 )))) ;;; SCORE ASSEMBLY (setf piano-rh (omn-replace :articulation '(default leg leg leg default fermata-l) (ambitus-filter '(c4 c8) (assemble-seq with-ch1 with-ch2 with-ch3)) :section '(71))) (setf piano-lh (omn-replace :articulation '(default fermata-l) (ambitus-filter '(c0 b3) (assemble-seq with-ch1 with-ch2 with-ch3)) :section '(71))) ;;;--------------------------------------------------------- ;;; Score and Layout ;;;--------------------------------------------------------- (def-score Study (:title "Mcil-study" :composer "S.Boussuge" :copyright "Copyright © 2018 s.boussuge " :key-signature 'chromatic :time-signature '((1 1 1) 4) :tempo 82 :layout (piano-solo-layout 'piano-rh 'piano-lh)) (piano-rh :omn piano-rh :channel 1 :sound 'gm :program 'acoustic-grand-piano :volume 100 :pan 64 :controllers (91 '(48)) ) (piano-lh :omn piano-lh :channel 2 :controllers (91 '(48)) ) )  

But indeed, i see, it is more about chord processing...
 
Thanks for this.
 
All the best
 
SB.

But also you need to use the :cycle t keyword. It allo you to cycle between the chords definition, because if :cycle nil (default) chords are chosen randomly.
 
SB.

Hi Wim,
 
a possible solution:
 
(setf chords (mclist (mapcar (lambda(x) ;; mapcar will apply the inversion to each chord (chord-inversion 3 x)) (harmonic-progression ;; harmonic progression definition (integer-transpose -1 '(1 2 3 4 5 6 7)) ;;degree for the chords '(c4 major) ;; scale used :size 4 ;; chords size )))) (setf drop2 (chordize-list (pitch-transpose-n '(0 0 -12 0) (pitch-melodize chords)))) SB.

Here's a new function a bit similar to my old "add-interval-if-length" function but bit more sophisticated.
It use gen-chord3 to create chord on defined length.
 
;;; ============================================== ;;; UTILITY FUNCTIONS ;;; (defun make-chord-if-length-aux (omn &key (test #'>) (length-val 1/8) (interval-list '((4 7)(7 12))) (cycle t)(relative nil) seed) (setf seed (rnd-seed seed)) (let ((s-events (single-events omn))) (loop for e in s-events for i in (gen-trim (length s-events) interval-list) when (funcall test (omn-encode (first e)) length-val) append (omn-replace :pitch (gen-chord3 (list (second e)) i :cycle cycle :relative relative :seed (seed)) e ) else append e))) ;(make-chord-if-length-aux '(q c4 d4 e4 f4 e g4 a4)) ;(make-chord-if-length-aux '(q c4 d4 e4 f4 e g4 a4) :interval-list '((4 7)(3 10))) ;(make-chord-if-length-aux '(q c4 d4 e4 f4 e g4 a4) :interval-list '((4 7 11 14)(7 9 16)) :cycle nil) ;(make-chord-if-length-aux '(q c4 d4 e4 f4 e g4 a4) :interval-list '((4 7 11 14)(7 9 16)) :cycle nil :seed 4) ;(make-chord-if-length-aux '(q c4 d4 e4 f4 e g4 a4) :interval-list '((4 7 11 14)(7 9 16)) :cycle nil :relative t) ;(make-chord-if-length-aux '(q c4 d4 e4 f4 e g4 a4) :interval-list '((4 7 11 14)(7 9 16)) :cycle nil :relative t :seed 4) ;;; ============================= ;;; MAIN FUNCTION (defun make-chord-if-length (omn &key (test #'>) (length-val 1/8) (interval-list '((4 7)(7 12)))(cycle nil)(relative nil) seed) (setf seed (rnd-seed seed)) (do-verbose ("make-chord-if-length :seed ~s :length-val ~s :interval-list ~s :cycle ~s :relative ~s" seed length-val interval-list cycle relative) (let ((test-fn (case test (> #'>) (< #'<) (= #'=) (otherwise test)))) (if (listp (car omn)) (mapcar #'(lambda (x) (make-chord-if-length-aux x :test test-fn :length-val (omn-encode length-val) :interval-list interval-list :cycle cycle :relative relative :seed (seed))) omn) (make-chord-if-length-aux omn :test test-fn :length-val (omn-encode length-val) :interval-list interval-list :cycle cycle :relative relative :seed (seed)))))) ;;; Tests ;(make-chord-if-length '((q c4 e d4 e4 f4 h d4)(s a4 b4 a4 g4 h f4)(q c4 d4 h e4))) ;(make-chord-if-length '((q c4 e d4 e4 f4 h d4)(s a4 b4 a4 g4 h f4)(q c4 d4 h e4)) :seed 8) ;(make-chord-if-length '((q c4 e d4 e4 f4 h d4)(s a4 b4 a4 g4 h f4)(q c4 d4 h e4)) :interval-list '((2 9)(7 11))) ;(make-chord-if-length '((q c4 d4 e4 f4 g4)(s a4 b4 a4 g4 h f4)(q c4 d4 h e4)) :cycle t) ;(make-chord-if-length '((q c4 e d4 e4 f4 h d4)(s a4 b4 a4 g4 h f4)(q c4 d4 h e4)) :cycle nil :relative t) ;(make-chord-if-length '((q c4 e d4 e4 f4 h d4)(s a4 b4 a4 g4 h f4)(q c4 d4 h e4)) :cycle nil :relative t :seed 8) i've also attached the original file to this post.
SB.
make-chord-if-length.lisp

i did a "default" articulation with no display in my opmo user attributes file.
 
(add-program-attributes '(default) ) SB.