Cadenza

In music, a cadenza (from Italian:cadenza [kaˈdɛntsa], meaning cadence; plural, cadenze [kaˈdɛntse]) is, generically, an improvised or written-out ornamental passage played or sung by a soloist or soloists, usually in a "free" rhythmic style, and often allowing for virtuosic display. Indicated by a fermata in all parts if improvised, a cadenza is usually over a final or penultimate note in a piece or important cadence and the accompaniment rests or sustains a note or chord. Thus it is often before a final coda or ritornello.