Becoming a a US citizen in 1943, he became a recognised Hollywood composer and won four Academy Awards for best musical score, including for Porgy & Bess in 1959 and My Fair Lady in 1964.
But he soon abandoned film and turned his attention to his work as a pianist, appearing in sold-out concerts that would combime classical music and jazz.

He also conducted orchestras including the London Symphony and Los Angeles Philharmonic.
“For years he conducted in small cities to gain experience and overcome the label of a Hollywood composer,” Variety wrote of his change of career in the late 1960s.
Previn was known for having a colourful private life, having been married five times. He had nine biological and adopted children.