LilyPond - dynamics and MIDI output

In piano music, the dynamics written between the upper and lower staves seem to apply to both staves. But in LilyPond's MIDI output, the dynamics are understandably only placed in the staff where they were entered. When the MIDI plays, one staff gets louder and softer in the right places, while t

\rest in \drummode?

Dear all, is there a way to place a rest (higher) in \drummode? (like with \rest command in normal staffs) \version "2.10.15" up = \drummode { s1 } down = \drummode { sn4 sn2.\rest } \new DrumStaff << \new DrumVoice { \voiceOne \up } \new DrumVoice { \voiceTwo \down } >> \layout {

change Staff hara-kiri-ability on the fly?

Hello all, Just wondering if anyone has solved the problem of turning the hara- kiri-ability of a Staff on the fly? i.e., I want to dictate, at any point in the score, whether \RemoveEmptyStaffContext will act on (i.e., remove) a Staff, regardless of whether that Staff has only whole-measure