Song arranged by Carlo (5)
I believe the answer is:
carol
'song' is the definition.
(I know that carol is a type of song)
'arranged by carlo' is the wordplay.
'carlo' anagrams to 'CAROL'.
But, I'm not sure how the anagram is indicated.
Can you help me to learn more?
(Other definitions for carol that I've seen before include "Song celebrating the birth of Jesus" , "Girl" , "Joyful song - woman's name" , "See 1" , "Canticle" .)