'''André Previn and His Quartet''' was an ensemble that had recorded [https://beta.musicbrainz.org/release-group/d3c4cc28-1946-4bf8-a99b-08357b4fef92|an album of music from ''My Fair Lady''] (Columbia, 1964). The quartet comprised Previn (piano), Herb Ellis (guitar), Red Mitchell (bass), and Frank Capp (drums).