Picaroon's turned up funky tune for a dance (6)
I believe the answer is:
minuet
'for a dance' is the definition.
(minuet is a kind of dance)
'picaroon's turned up funky tune' is the wordplay.
'picaroon's' becomes 'im' (where the crossword setter is 'Picaroon').
'turned up' says the letters should be written backwards.
'funky' indicates an anagram (I've seen this in other clues).
'im' written backwards gives 'mi'.
'tune' with letters rearranged gives 'nuet'.
'mi'+'nuet'='MINUET'
(Other definitions for minuet that I've seen before include "18th-century dance" , "Slow, graceful dance" , "Stately C 18 dance" , "Stately old dance, takes only a minute" , "Gracious old dance, just takes a minute" .)