3 Theads can be traced automagically when they switch staffs by setting
4 property @code{followThread}.
7 % followThread: connect note heads with line when thread switches staff
11 \property PianoStaff.followThread = ##t
12 \context Staff \context Voice {
17 \context Staff=two {\clef bass; \skip 1*2;}
21 \paper { linewidth = -1.; }
24 \notes\relative c \fragment