who sang one is the loneliest number first
Harry Nilsson wrote and sang the song in 1967. Later on the band Three Dog Night sang One is the Loneliest Number in 1969. They were the ones to make it popular and send â¦ it to the top of the charts.nswered by The Community. Making the world better, one answer at a time. Though often called The Loneliest Number, the song is actually One and was written by Harry Nilsson for his 1967 album Aerial Ballet.