Alma Cogan
From Tardis Wiki, the free Doctor Who reference
Alma Cogan was an individual in 20th century Earth popular culture.
Ian Chesterton once described a "really freaky" dream he had which involved Cogan doing the twist atop a piano with Brian Epstein. Vicki Pallister did not know who Cogan was. (PROSE: Byzantium! [+]Loading...["Byzantium! (novel)"])
Behind the scenes
Although unstated, Alma Cogan was a real world singer active in the 1950s and 1960s.