In a vocal score (SATB on separate staves + keyboard), it is useful to suppress empty staves when all the singers are silent, using: \score { \layout { \context { \RemoveEmptyStaffContext }}}
Is there a way to suppress this behaviour selectively, when one singer happens to have a few bars rest? In other words, force the tenor (for example) to display a line of R1 rests, to prevent the score suddenly appearing as SAB + keyboard for a line?