"One '' Single by Harry Nilsson from the album Aerial Ballet B - side "Sister Marie '' Released 1968 Recorded 1967 Genre Chamber pop Label RCA Songwriter (s) Harry Nilsson Producer (s) Rick Jarrard Harry Nilsson singles chronology "Good Old Desk '' (1967) "One '' (1968) "Everybody 's Talkin ' '' (1968) "Good Old Desk '' (1967) "One '' (1968) "Everybody 's Talkin ' '' (1968)
who sang one is the loneliest number original
Harry Nilsson Harry Nilsson Harry Nilsson