fwiw i think the default is right - what's being asked for is (to be
pedantic) 6/16 beaming
anyway... if there aren't too may of them you could use a function
like this
\version "2.11.23"
alt =
#(define-music-function (parser location music1 music2 music3
music4) (ly:music? ly:music? ly
You can use
\set Timing.beatLength = #(ly:make-moment 3 8)
but then you will get a funny looking result if you have the rhythm c8
c16 c16 c8
for example. I'm actually not convinced that LilyPond does what it
should in
these situations. There is a property subDivideBeams which seems to work
in s