Cyril playing song (5)
I believe the answer is:
lyric
'song' is the definition.
(song with lyrics)
'cyril playing' is the wordplay.
'playing' indicates anagramming the letters.
'cyril' is an anagram of 'LYRIC'.
(Other definitions for lyric that I've seen before include "part of song" , "One barred from native country" , "Expressing poetical emotions" , "in musical" , "A song or poem" .)