Boost beams of light for the audience (5)
I believe the answer is:
raise
'boost' is the definition.
(I've seen this in another clue)
'beams of light for the audience' is the wordplay.
'beams of light' becomes 'rays' (I've seen this in another clue).
'for the audience' shows a homophone (sound like) (how an audience might hear it).
'rays' sounds like 'RAISE'.
(Other definitions for raise that I've seen before include "Breed" , "Inflate" , "climb" , "Increase; elevate" , "Lift - increase" .)