3 Beams can be typeset over fixed distance aligned staffs, beam
4 beautification doesn't really work, but knees do. Beams should be
5 behave well, wherever the switching point is.
10 \context Staff=one \notes\relative c'{
11 \stemUp [c8 c \translator Staff=two \stemUp c c]
14 \stemDown [c8 c \translator Staff=two \stemUp c c]
16 \stemDown [c8 c \translator Staff=one \stemDown c c]
19 \stemUp [c8 c \translator Staff=one \stemDown c c]
22 \context Staff=two \notes\relative c'{