In music, a cadenza 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 virtuosic display. During this time the accompaniment will rest, or sustain a note or chord. Thus an improvised cadenza is indicated in written notation by a fermata in all parts. A cadenza will usually occur over either the final or penultimate note in a piece, the lead-in, or the final or penultimate note in an important subsection of a piece. It can also be found before a final coda or ritornello.