Musical talent key to dances (5)
I believe the answer is:
chops
'musical talent' is the definition.
(I've seen this in another clue)
'key to dances' is the wordplay.
'key to' becomes 'c' (I've seen this in other clues).
'dances' becomes 'hops' (hop is a kind of dance).
'c'+'hops'='CHOPS'
(Other definitions for chops that I've seen before include "Hacks" , "trap" , "Axes" , "Cuts of meat including part of a rib" , "Cuts; slices of meat" .)