Dance beat on grand disc (5)
I believe the answer is:
tango
'dance' is the definition.
(tangoing is a kind of dancing)
'beat on grand disc' is the wordplay.
'beat' becomes 'tan' (I've seen this before**).
'on' is a charade indicator (letters next to each other).
'grand' becomes 'g' ('G' can be a synonym of 'grand').
'disc' becomes 'o'.
'tan'+'g'+'o'='TANGO'
(Other definitions for tango that I've seen before include "Dramatic ballroom dance from Argentina" , "something seen in ballroom?" , "South American dance (for two?)" , "Dance originating in Argentina" , "Activity requiring two to" .)