Showy solo passage (7)
I believe the answer is:
cadenza
'showy solo passage' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cadenza that I've seen before include "Elaborate passage near the end of a piece of music" , "Elaborate musical flourish" , "Virtuoso solo passage near the end of a piece of music" , "Virtuoso passage in concerto, etc" , "Final elaborate, showy solo in concerto etc." .)