Frank Sinatra was an American singer and actor in the 20th century. Brigadier Lethbridge-Stewart was an avowed fan of his. (PHS: Smash Hit) The Doctor was on close personal terms with Sinatra, using his cabin to hold a party with Albert Einstein and Father Christmas. In 1952, the Eleventh Doctor and Sinatra performed a duet at a Hollywood party. (DW: A Christmas Carol)
