Lady Day was the nickname given to jazz singer Billie Holiday by her friend and music partner Lester Young. She, in turn, dubbed him Pres. On June 24, 1942, Holiday recorded Trav’lin Light with Paul Whiteman for a new label, [l654]. Because she was under contract with [l1866], she used the pseudonym Lady Day. The song reached 23 on the pop charts and number one on the R&B charts, then called the Harlem Hit Parade.

Billie Holiday (born April 7, 1915, Philadelphia, Pennsylvania, USA - died July 17, 1959, New York City, New York, USA) was an American jazz singer and songwriter.