"Baby Get Lost" is a July, 1949 single by Dinah Washington

Dinah Washington

Dinah Washington, born Ruth Lee Jones , was an American blues, R&B and jazz singer. She has been cited as "the most popular black female recording artist of the '50s", and called "The Queen of the Blues"...

 (Mercury 8148). The single was Dinah Washington's second number one on the R&B chart where it stayed at the top for two weeks. The B-side, "Long John Blues", made it to number three on the R&B chart soon after.

It was also recorded by Billie Holiday, issued in September 1949 (Decca 24726) as the B-side to "Ain't Nobody's Business if I Do".

Queen Latifah

Queen Latifah

Dana Elaine Owens , better known by her stage name Queen Latifah, is an American singer, rapper, and actress. Her work in music, film and television has earned her a Golden Globe award, two Screen Actors Guild Awards, two Image Awards, a Grammy Award, six additional Grammy nominations, an Emmy...

 covered the song on her jazz album, The Dana Owens Album

The Dana Owens Album

The Dana Owens Album is the fifth studio album by American recording artist Queen Latifah, released in the United States on September 28, 2004 by Interscope Records. Unlike Latifah's previous hip hop/R&B-oriented efforts, this album showcases a jazz vocal performance...

.

The song was written by Leonard Feather

Leonard Feather

Leonard Geoffrey Feather was a British-born jazz pianist, composer, and producer who was best known for his music journalism and other writing.-Biography:...

, but credited to Billy Moore, Jr.