Sound beams to erect (5)
I believe the answer is:
raise
'erect' is the definition.
(synonyms)
'sound beams' is the wordplay.
'sound' shows a homophone (sound like).
'beams' becomes 'rays' (I've seen this before).
'rays' is a homophone of 'RAISE'.
'to' is the link.
(Other definitions for raise that I've seen before include "To promote" , "Bring up a salary increase" , "Lift, elevate" , "better?" , "Haul up" .)