\override DrumStaff.StaffSymbol #'line-positions = #'(-2 3)
\set DrumStaff.drumStyleTable = #(alist->hash-table mydrums)
\override Staff.BarLine #'bar-size = #3
\override DrumStaff.StaffSymbol #'line-positions = #'(-2 3)
\set DrumStaff.drumStyleTable = #(alist->hash-table mydrums)
\override Staff.BarLine #'bar-size = #3