Muse in bother at Orange (5)
I believe the answer is:
erato
'muse' is the definition.
(I know that Erato is an muse)
'in bother at orange' is the wordplay.
'in' indicates a hidden word.
'ERATO' can be found hidden inside 'bother at orange'.
(Other definitions for erato that I've seen before include "Source of poetic inspiration" , "Poet's muse" , "Greek muse - orate (anag)" , "Greek muse of lyric and love poetry" , "One of the Muses" .)