Billboard has released its list of top 40 girl group songs of all time.
It isn't subjective. It's based on the songs' performances on the charts -- and is led by a disco hit from 38 years ago.
With the top grossing tour of the year and a No. 1 Billboard 200 album ("Midnight Memories"), One Direction claimed honors as Billboard's 2014 Artist of the Year.
One Direction's "Midnight Memories" included the hit "Story of My Life." The English-Irish group includes Harry Styles, Zayn Malik, Niall Horan, Liam Payne and Louis Tomlinson.