Orate medley to the Muse of love poetry (5)
I believe the answer is:
erato
'the muse of love poetry' is the definition.
(I've seen this before)
'orate medley' is the wordplay.
'medley' indicates anagramming the letters.
'orate' anagrammed gives 'ERATO'.
'to' is the link.
(Other definitions for erato that I've seen before include "Muse of lyric poetry and mime" , "One of nine" , "goddess" , "Who may have inspired poetry" , "Muse of 11 and 23" .)