Lester was born in Megargel, Texas and raised in Northern Ontario, Canada. After a few years in Detroit, she joined the US Army Air Corps before attending UCLA with a major in music. In Hollywood, she worked with Henry Mancini and Herb Alpert, recorded for Liberty, Warner Brothers and A&M, and sang demos for songwriters. At A&M Records Lester recorded one of her most frequently heard, though uncredited, contributions—singing in Spanish behind the narrated portion of the Sandpipers' 1966 hit "Guantanamera".
