LP ok playing a dance (5)
I believe the answer is:
polka
'dance' is the definition.
(I know that polka is a more specific form of the action dance)
'lp ok playing a' is the wordplay.
'playing' indicates an anagram.
'lp'+'ok'='lpok'
'lpok' with letters rearranged gives 'polk'.
'polk'+'a'='POLKA'
(Other definitions for polka that I've seen before include "Folk dance" , "Lively dance, originally from Bohemia" , "Bohemian dance with three steps and a hop" , "An originally Bohemian dance" , "Czech dance" .)