"[1][2][3] In 1944 Lynn joined Artie Shaw's band, with whom she toured and recorded "Ac-Cent-Tchu-Ate the Positive" and "Can't Help Lovin' Dat Man".

[4] After two years with Shaw, Lynn briefly became female lead vocalist for the Merry Macs vocal group.

She left the Merry Macs to join the Smart Set vocal group in 1947,[5] then in 1949 she became lead singer for the Starlighters (Pauline Byrns had retired in 1947).

As a Starlighter she sang backing vocals for Nat King Cole, Dean Martin, Frank Sinatra, Jo Stafford, and other stars.

She dubbed Mona Freeman's singing voice in Mother Wore Tights and Isn't It Romantic?, Loretta Young in Mother Is a Freshman, Leslie Parrish in Li'l Abner, and Vera Miles in Beau James.