Aerial Ballet is the third album by Harry Nilsson released in 1968. Aerial Ballet was titled after the highwire circus act of his grandparents. It consists almost entirely of songs written by him, including "One", which later became a Number Five hit for Three Dog Night. (The song's opening line, "One is the loneliest number", is a common phrase to this day.) The title of the album has been given by Joey Kramer as the inspiration for Aerosmith's name and wings motif.