Emotional composition (8)
I believe the answer is:
rhapsody
'emotional composition' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for rhapsody that I've seen before include "Ecstatic written or romantic musical composition" , "Moving piece of music" , "ecstatic words?" , "Irregular, emotional piece of music" , "Exalted, free-style, composition" .)