3 morgenliedBeam = \relative c'' \new Voice {
11 rachmaninovBeams = \relative c' \new Voice {
15 <c' e c'>8[ <g c g'> <c f> <ees, ees'>] ~
16 <ees ees'>8[ <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 =
36 #(ly:make-simple-closure
37 (ly:make-simple-closure
39 (list chain-grob-member-functions `(,cons 0 0))
40 (check-slope-callbacks =))))
42 mustNotBeHorizontal = {
43 \override Staff.Beam #'positions =
44 #(ly:make-simple-closure
45 (ly:make-simple-closure
47 (list chain-grob-member-functions `(,cons 0 0))
48 (check-slope-callbacks <>))))