F note playing repeatedly (5)
I believe the answer is:
often
'repeatedly' is the definition.
(I've seen this before)
'f note playing' is the wordplay.
'playing' indicates an anagram.
'f'+'note'='fnote'
'fnote' is an anagram of 'OFTEN'.
(Other definitions for often that I've seen before include "Quite frequently" , "Commonly" , "on many occasions" , "Repeatedly, many times" , "More than occasionally" .)