Providing wine during the musical performance (6)
I believe the answer is:
giving
'providing' is the definition.
(giving is a kind of providing)
'wine during the musical performance' is the wordplay.
'wine' becomes 'vin' ('wine' in French).
'during' means one lot of letters goes inside another.
'the musical performance' becomes 'gig' (a gig is a musical concert. I am not sure about the 'musical' bit.).
'vin' put inside 'gig' is 'GIVING'.
Can you help me to learn more?
(Other definitions for giving that I've seen before include "Granting" , "Yielding; presenting" , "Donating" , "Handing over" , "'Friday's child is loving and . . . . . .'" .)