Dance rehearsal sadly incomplete (5)
I believe the answer is:
salsa
'dance' is the definition.
(type of dance)
'rehearsal sadly incomplete' is the wordplay.
'incomplete' indicates a hidden word (an incomplete sample of the clue).
'SALSA' is hidden within 'rehearsal sadly'.
(Other definitions for salsa that I've seen before include "Chilli sauce" , "The Latin-American sound" , "Sauce; Afro-Cuban dance" , "Hot dance - hot sauce" , "hot stuff" .)