Virtuoso passage (7)
I believe the answer is:
cadenza
'virtuoso passage' is the definition.
(musical passage)
This is all the clue.
(Other definitions for cadenza that I've seen before include "Virtuoso solo passage in a concerto" , "Elaborate passage for soloist" , "Virtuoso solo passage near the end of a piece of music" , "Elaborate musical flourish" , "One's passage" .)