6 Beams, stems and noteheads often have communication troubles, since
7 the two systems for y dimensions (1 unit = staffspace, 1 unit = 1
10 Stems, beams, ties and slurs should behave similarly, when placed
11 on the middle staff line. Of course stem-direction is down for high
12 notes, and up for low notes.
18 \context Voice \notes\relative c {