Elton John
From Tardis Wiki, the free Doctor Who reference
Elton John was a male singer from the planet Earth during the late 20th and early 21st centuries.
Peri Brown once disdainfully likened a statue of Eros she had recently seen to the visage of Elton John. (TV: Planet of Fire)
According to the Seventh Doctor, Elton John offered him piano lessons but he declined. He later regretted that decision. (AUDIO: Project: Lazarus)
Elton Pope also referred to him on his personal videolog, going so far as to include a clip of John singing to differentiate himself from the singer. (TV: Love & Monsters)