Star to record piece of music (7)
I believe the answer is:
canopus
'star' is the definition.
(I've seen this before)
'record piece of music' is the wordplay.
'record piece of' becomes 'can' (I can't explain this - if you can you should believe this answer much more).
'music' becomes 'opus' (opus is a kind of music).
'can'+'opus'='CANOPUS'
'to' is the link.
Can you help me to learn more?
(Other definitions for canopus that I've seen before include "Ancient Egyptian funeral jar to hold entrails" , "Ancient Egyptian vase" , "Shiner" , "Second brightest star in the sky" , "A luminary" .)