It was 40 years ago Sunday (February 19th, 1972) that Harry Nilsson's "Without You" began its four-week run at the top of the charts. The song was Nilsson's second major hit, following 1969's "Everybody's Talkin'," and went on to win the 1972 Grammy for Best Male Pop Vocal Performance. It was featured on his critically acclaimed 1971 album Nilsson Schmilsson.
Nilsson heard "Without You" at a party and was convinced it was a Beatles track he had never heard. The song had actually been recorded by the Beatles' proteges Badfinger, and written by the band's Pete Ham and Tommy Evans, who created the song by taking the verses from an unfinished Ham song, and stringing it together with a stray chorus that Evans couldn't fit into any of his songs.
Here's Pete and Tommy and Badfinger, with our pal Joey Molland doing the song: