I’m trying to merge two voices, but the grace notes get lost in the process. What do I need to do differently? Thanks for any advice!

Greetings

André

(setf v1 '(-1/4  1/28 eb5 p ten a4 bb2 ff ten+marc (-acc 1/8 gs4 mf leg) 1/28 b4 ppppp ten -3/28))
(setf v2 '(-6/28 (-acc 1/8 f6 ff) 3/28 d4e9 pppp ten -5/28))

(merge-voices v1 v2)
=> (-7w. 7q^7h. d4e9 pppp ten eb5 p ten a4 bb2 ff ten+marc b4 ppppp ten -7h.)

Will check.

any solutions?

This one is very tricky. I will dig into it after I finish something we all wating for :-)

A little hint for the community? :-)

Weird notation shows up when I merge the following voices—on their own, there’s no problem.

;; two versions

(setf v1 '((-3he d4 pppp - d4 - d4) (-3he d4 pppp - d4 - -)))
(setf v2 '((-7wq - eb5 pppp ten - eb5 ten - eb5 ten) (-7wq eb5 pppp ten - eb5 ten - - -)))

(merge-voices v1 v2)

(setf v1 '(-3he d4 pppp - d4 - d4 -3he d4 pppp - d4 - -))
(setf v2 '(-7wq - eb5 pppp ten - eb5 ten - eb5 ten -7wq eb5 pppp ten - eb5 ten - - -))

(merge-voices v1 v2)

I would always avoid merging complex material using the merge-voices function.

The function is useful for simple merges where length is not part of complex divisions.

The best way to merge them is to do so at the def-score level in the layout.

(setf v1 '((-3he d4 pppp - d4 - d4) (-3he d4 pppp - d4 - -)))
(setf v2 '((-7wq - eb5 pppp ten - eb5 ten - eb5 ten) (-7wq eb5 pppp ten - eb5 ten - - -)))

(def-score test
    (:key-signature '(c maj)
     :time-signature '(4 4) 
     :tempo '(q 120)
     :layout '(:treble inst1 inst2))
  
  (inst1
   :omn v1
   :channel 1
   :sound 'gm
   :program 0)
  (inst2
   :omn v2
   :channel 1
   :sound 'gm
   :program 0)
  )

With grace note merge at the moment we are getting messy display, it is a bug.

A wonderful tip! Thank you!