Walls and Bridges is the fifth studio album by English musician John Lennon. It was issued by Apple Records on 26 September 1974 in the United States and on 4 October in the United Kingdom. Written, recorded and released during his 18-month separation from Yoko Ono, the album captured Lennon in the midst of his "Lost Weekend". Walls and Bridges was an American number-one album on both the Billboard and Record World charts and included two hit singles, "Whatever Gets You thru the Night" and "#9 Dream". The first of these was Lennon's first number-one hit in the United States as a solo artist, and his only solo chart-topping single in either the US or Britain during his lifetime.