Street music can be used to elevating effect (5)
I believe the answer is:
stair
'be used to elevating effect' is the definition.
I can't tell whether this defines the answer.
'street music' is the wordplay.
'street' becomes 'st'.
'music' becomes 'air' (air is a kind of music).
'st'+'air'='STAIR'
'can' is the link.
Can you help me to learn more?
(Other definitions for stair that I've seen before include "Component of flight" , "Tread and riser" , "Bit of a flight!" , "Step in house" , "Flight unit" .)