Record no end of dance music (4)
I believe the answer is:
disc
'record' is the definition.
(eg a CD, compact disc)
'no end of dance music' is the wordplay.
'no end of' means to remove the last letter.
'dance music' becomes 'disco' (type of dance music).
'disco' with its last letter taken off is 'DISC'.
(Other definitions for disc that I've seen before include "jockey may be after" , "Capital of India" , "Forty-five" , "Old record" , "Thin flat circular object" .)