Question: In music, an ostinato, is a motif or phrase that persistently repeats in the same musical voice, usually at the same pitch, well-known ostinato-based pieces include both classical compositions such as Donna Summer, was an American singer, songwriter, and painter, and she gained prominence during the disco era of which late era?
Sentence (from "Donna Summer"): She also charted two number-one singles on the R&B charts in the U.S. and a number-one in the U.K.
Relevant evidence: No