Thank You For The Music - A Celebration Of The Music Of Abba [Getty Images]

LONDON, ENGLAND - SEPTEMBER 13: (L-R) Benny Andersson and Bjorn Ulvaeus take the stage for the curtain call at 'Thank You For The Music' at Hyde Park on September 13, 2009 in London, England. (Photo by Jon Furniss/WireImage)

WireImage Jon Furniss