Piece of music that's short, to a greater extent in audition (7)
I believe the answer is:
morceau
'piece of music that's short' is the definition.
(short piece of music)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for morceau that I've seen before include "piece of music" , "Fragment, morsel (French); EC amour (anag.)" , "Mime artist" , "Fragment; short literary composition" .)