A singer was someone who performed songs for a living.
In 2700 BC, the travelling singer Avram aided the Seventh Doctor and Ace against Ishtar. (PROSE: Timewyrm: Genesys)
In 1858, Cosette studied to become an opera singer in Paris. (COMIC: The Screams of Death)
In 1881, the Clantons (Ike, Billy and Phineas) forced Steven Taylor to sing "The Ballad of the Last Chance Saloon while Dodo Chaplet accompanied him on the piano. (TV: The Gunfighters)
In the 1890s, a singer performed at the Palace Theatre. (TV: The Talons of Weng-Chiang)
In 1930, Tallulah was the lead singer for the New York Revue at the Laurenzi. (TV: Daleks in Manhattan)
In 1941, a singer performed at the Kiss the Boys Goodbye Dance at The Ritz. (TV: Captain Jack Harkness)
Later that year, a singer performed at a nightclub in London. (TV: The Empty Child)
In the 1950s, Billy was the lead singer for the Lorells. (TV: Delta and the Bannermen)