4 morgenliedBeam = \relative c'' \new Voice{
12 rachmaninovBeams = \relative \new Voice {
16 <c' e c'>8 <g c g'> <c f> <ees, ees'>~ <ees ees'> <c c'> <des des'> <d d'>
23 nonHorizontalBeams = {
31 % cut & paste from beam-concave.ly
33 #(define (<> x y) (not (= x y)))
35 \override Staff.Beam #'positions = #(ly:make-simple-closure
36 (ly:make-simple-closure
38 (list chain-grob-member-functions `(,cons 0 0))
39 (check-slope-callbacks =))))
41 \override Staff.Beam #'positions = #(ly:make-simple-closure
42 (ly:make-simple-closure
44 (list chain-grob-member-functions `(,cons 0 0))
45 (check-slope-callbacks <>))))