Kaiser Chief’s Ruby as performed by not 47, as the title suggests, but 51 acts:

Carlos Ramos Stahlverbieger Blue Sharp The Beards Drums The Word Sean Harrington Teejay Filipe Frutuoso And Yuri Bertozzi Vonnie 152 Cover Solutions Michael Mendes Vg Bass Pocket Fox Casey Thayer Jacob Heald Celo 17 David Locke Julila Dominguez Rostra Bass Andersongmann777 Andrew Lukins Frugled Wedding String Quartet Leftis 1986 Imogen Taylor Fancy Sauce Lada Alex Bourner Adam1dabest Scooby Doo Fut Como Le Gusta Seu Roque Riff Raff Choir Mike Barnes The Cowbell Man Boris Fonseca Stuart - Newbury School Audrey123talks/Kate Elie Le Storie Tese Notawurger Diana Guardado Beelzebubs Brett Le Sauvage Back By Friday Mika Ronos Fuori Tempo Жигули Gabriel David Gomez General Do One Kaiser Chiefs