Had Butler's hymn rewritten in the style of the early Stones (6,3,5)
I believe the answer is:
rhythm and blues
'the style of the early stones' is the definition.
I don't know anything about this answer so I cannot judge whether this works.
'had butler's hymn rewritten' is the wordplay.
'rewritten' indicates anagramming the letters.
'had'+'butlers'+'hymn'='hadbutlershymn'
'hadbutlershymn' anagrammed gives 'RHYTHM AND BLUES'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for rhythm and blues that I've seen before include "Music style" , "Type of music" , "track in this style for record perhaps" .)