@code{midiMinimumVolume}.")
(midiMinimumVolume ,number? "Set the minimum loudness for MIDI.
Ranges from 0 to@tie{}1.")
+ (midiChannelPerStaff ,boolean? "If set to @code{##t},
+each staff is assiged its own channel.")
(minimumFret ,number? "The tablature auto string-selecting
mechanism selects the highest string with a fret at least
@code{minimumFret}.")