Horizontal bar below staff

[Jakob Schöttl]

Hello,

for a tabulature for diatonic harmonica I need a strong horizontal bar 
or line below the notes.  This is for indicating bellow "push/blow" (in 
contrast to "pull/draw").  Please see the attached image for how it 
should look.

The bar should can

 - span multiple notes and even measures
 - but also only mark a single note.

If possible, the bar should be bound to notes.  I'm using Python with 
Abjad and I cannot arbitrarily insert LilyPond/Scheme commands.  But I 
can add commands to notes like { \xNote c' } or { c'\harmonic }.

Thanks!

-- Jakob

bar_below_notes.png
Description: PNG image