Question: Us Conductors is a fictonalized novel of a relationship that included a classical violin prodigy who was the sister of a pianist named what?
Sentence (from "Clara Rockmore"): Clara Rockmore (née Reisenberg, March 9, 1911 – May 10, 1998) was a classical violin prodigy and a virtuoso performer of the theremin, an electronic musical instrument.
Relevant evidence: Yes