+\relative c' {
+ \time 3/4
+ \override Staff.StaffSymbol.layer = 4
+ \once \override Tie.layer = 2
+ b'2.~
+ \once \override Staff.TimeSignature.whiteout-style = #'outline
+ \once \override Staff.TimeSignature.whiteout = 3
+ \once \override Staff.TimeSignature.layer = 3
+ \time 5/4
+ b4
+}