Musical orphan exposed in play (4)
I believe the answer is:
live
'in play' is the definition.
(similar in meaning)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for live that I've seen before include "shocking potentially?" , "Be - unrecorded" , "remembered" , "Present in person, not recorded" , "Being performed at the time of hearing or viewing" .)