TabStaff vs. midi

[Ferenc Wagner]

               Hello,

is it possible to make a TabStaff output midi?  It tried

\score {
    \simultaneous {
        \context Staff = "voice" \addlyrics \solo \context Lyrics \lyr
        \context TabStaff = "guitar" \guitar
    }
    \paper {
        \translator {
            \RemoveEmptyStaffContext
            minimumVerticalExtent = #'(30 . 3)
        }
        \translator {
            \TabVoiceContext
            \consists Rest_engraver
            \remove Swallow_performer
            \consists Note_performer
        }
    }
    \midi {
    }
}

But it didn't help.  Is there a way?  Btw, is there a
fundamental reason for TabVoiceContext not consisting of
Rest_engraver?  I find it useful for orientation.

LilyPond 2.0, 2.1

Thanks,
Feri.