In 1942, with increasing dissent and money concerns in Fitzgerald's band, Ella and Her Famous Orchestra, she started to work as lead singer with The Three Keys, and in July her band played their last concert at Earl Theatre in Philadelphia. While working for Decca Records, she had hits with Bill Kenny & the Ink Spots, Louis Jordan, and the Delta Rhythm Boys. Producer Norman Granz became her manager in the mid-1940s after she began singing for Jazz at the Philharmonic, a concert series begun by Granz.