Hi,
here's a small piece for piano as an example of different process like tonality mapping, harmonic rhythm, rhytm and pitch cells etc..

;;; UTILITY
;;; ------------------------------------------------------------------------------
;;; 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))
  (let (pitches)
    (do-verbose
      ("gen-pitch-line")
    (rnd-seed 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)))))

;;;---------------------------------------------------------
;;; Parameters
;;;---------------------------------------------------------

;;; Global size
(setf size 42)

;;; Global random seed init
(init-seed 392)

;;; Harmonic content definition
;; Base row
(setf row (rnd-row :type :pitch :transpose 2))

;; Extract scales from row
(setf sc (gen-chord 12 7 7 0 0 (gen-trim 14 row)))

;; Harmonic rhythm to apply for the piece
(setf hry '(4 4 2 2 1 1 2 2 3 3))

;;; Generation of rhythmic cells reservoir
(setf ryres (euclidean-rhythm (gen-trim 8 '(16))
                                       '(1)
                                       '(16)
                                       's
                                       :type 2
                                       ))

;;; Generation of pitch contours reservoir
(setf pres (gen-divide 16 (gen-pitch-line 64)))

;;; 2 global control vectors
(setf vc1 (gen-white-noise size))
(setf vc2 (gen-white-noise size))

;;; Choose pitch in pitch reservoir based on vector
(setf pch1 (vector-map pres vc1))
(setf pch2 (pitch-transpose -12 (vector-map pres vc2)))

;;; Choose rhythmic cells in rhythm reservoir based on control vector
(setf r1 (vector-map ryres vc1))
(setf r2 (vector-map ryres vc2))

;;; definition of dynamics and articulation reservoir 
(setf bvel '((pp)(p)(mp)(mf)(f)(ff)))
(setf bart '((-)(-)(-)(marc)(-)(stacc)(-)(-)))

;;; Choose dynamics based on control vector
(setf v1 (vector-map bvel vc1))
(setf v2 (vector-map bvel vc2))

;;; Choose articulation based on control vector
(setf art1 (vector-map bart vc1))
(setf art2 (vector-map bart vc2))

;;; Chordize pitch when length = 1/4 or 1/2
(setf chp1 (length-chordize-map 
           '((1/4 2)(1/2 2))
           pch1
           r1
           ))

(setf chp2 (length-chordize-map 
           '((1/4 2)(1/2 2))
           pch2
           r2
           ))

;;; OMN assembly and harmonic remapping with tonality map whith harmonic rhythm (:time hry)
(setf p1a (ambitus-chord 
           12
           (tonality-map
           (mclist sc)
           (make-omn
            :pitch chp1
            :length r1
            :velocity v1
            :articulation art1
            )
           :time hry)))

(setf p1b (ambitus-chord 
           12
           (tonality-map
            (mclist sc)
            (make-omn
             :pitch chp2
             :length r2
             :velocity v2
            :articulation art2
            )
            :time hry)))

;;; Coda chords
(setf p2a '((w eb5a5 f)))
(setf p2b '((w d4bb4 f)))

;;; Assemble part1 and part2 (coda)
(setf piano-rh (assemble-seq p1a p2a))
(setf piano-lh (assemble-seq p1b p2b))

;;;---------------------------------------------------------
;;; Score and Layout
;;;---------------------------------------------------------

(def-score snippet
           (:title "Snippet for Piano"
            :composer "S.Boussuge"
            :copyright "Copyright © 2016 s.boussuge "
            :key-signature 'chromatic
            :time-signature '((1 1 1 1) 4)
            :tempo 100
            :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))
   )
  )

SB.

A better and more refined version. Attached, the Final score (from Dorico but first imported into Sibelius and after to Dorico because Dorico won't recall the opmo dynamics marks...).

 

 

;;; UTILITY
;;; ------------------------------------------------------------------------------
;;; 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))
  (let (pitches)
    (do-verbose
      ("gen-pitch-line")
    (rnd-seed 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)))))

;;;---------------------------------------------------------
;;; Parameters
;;;---------------------------------------------------------

;;; Global size
(setf size 42)

;;; Global random seed init
(init-seed 392)

;;; Harmonic content definition
;; Base row
(setf row (rnd-row :type :pitch :transpose 2))

;; Extract scales from row
(setf sc (gen-chord 12 7 7 0 0 (gen-trim 14 row)))

;; Harmonic rhythm to apply for the piece
(setf hry '(4 4 2 2 1 1 2 2 3 3))

;;; Generation of rhythmic cells reservoir
(setf ryres (euclidean-rhythm (gen-trim 8 '(16))
                                       '(1)
                                       '(16)
                                       's
                                       :type 2
                                       ))

;;; Generation of pitch contours reservoir
(setf pres (gen-divide 16 (gen-pitch-line 64 :compress 0.24)))

;;; 2 global control vectors
(setf vc1 (gen-white-noise size))
(setf vc2 (gen-white-noise size))

;;; Choose pitch in pitch reservoir based on vector
(setf pch1 (vector-map pres vc1))
(setf pch2 (pitch-transpose -12 (vector-map pres vc2)))

;;; Choose rhythmic cells in rhythm reservoir based on control vector
(setf r1 (vector-map ryres vc1))
(setf r2 (vector-map ryres vc2))

;;; definition of dynamics and articulation reservoir 
(setf bvel '((pp)(p)(mp)(mf)(f)(ff)))
(setf bart '((-)(-)(-)(marc)(-)(stacc)(-)(-)))

;;; Choose dynamics based on control vector
(setf v1 (vector-map bvel vc1))

;;; Choose articulation based on control vector
(setf art1 (vector-map bart vc1))
(setf art2 (vector-map bart vc2))

;;; Chordize pitch when length = 1/4 or 1/2
(setf chp1 (length-chordize-map 
           '((1/4 2)(1/2 2))
           pch1
           r1
           ))

(setf chp2 (length-chordize-map 
           '((1/4 2)(1/2 2))
           pch2
           r2
           ))

;;; OMN assembly and harmonic remapping with tonality map whith harmonic rhythm (:time hry)
(setf p1a (filter-tie
           (ambitus-chord 
            12
            (tonality-map
             (mclist sc)
             (chord-interval-replace
               '(1 2)
               '(4 8)
               (make-omn
                :pitch chp1
                :length r1
                :velocity v1
                :articulation art1
                ))
               :time hry))))

(setf p1b (ambitus
           '(c2 c4)
           (filter-tie
            (ambitus-chord 
             12
             (tonality-map
              (mclist sc)
              (chord-interval-replace
               '(1 2)
               '(4 8)
               (make-omn
                :pitch chp2
                :length r2
                :velocity v1
                :articulation art2
                ))
              :time hry)))))

;;; Coda chords
(setf p2a '((w eb5a5 f)))
(setf p2b '((w d4bb4 f)))

;;; Assemble part1 and part2 (coda)
(setf piano-rh (assemble-seq p1a p2a))
(setf piano-lh (assemble-seq p1b p2b))

;;;---------------------------------------------------------
;;; Score and Layout
;;;---------------------------------------------------------

(def-score snippet
           (:title "Snippet for Piano"
            :composer "S.Boussuge"
            :copyright "Copyright © 2016 s.boussuge "
            :key-signature 'chromatic
            :time-signature '((1 1 1 1) 4)
            :tempo 100
            :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))
   )
  )

SB.

SnippetForPiano Partition complète.pdf

Super cool

 

Patrick Mimran

 

Great !