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