Bring up some light for the audience? (5)
'bring up' is the definition.
(raising is a kind of bringing up)
'some light for the audience?' is the wordplay.
'some light' becomes 'rays' (I've seen this before).
'for the audience?' indicates a 'sounds like' (homophone) clue (I've seen 'for the audience' mean this).
'rays' sounds like 'RAISE'.
(Other definitions for raise that I've seen before include "Cultivate by growing", "Put up", "Lift - increase", "More money from America", "Care for during childhood".)