Released on The Beatles' 1968 White Album, "Birthday" stands as a poignant reflection on the passage of time and the fleeting nature of youth. The track features a distinctive, melancholic melody that contrasts with the album's often experimental and eclectic soundscapes. Written by John Lennon, the song captures the universal sentiment of nostalgia, resonating deeply with listeners who have experienced the transition from childhood to adulthood. Its inclusion on the White Album highlights the band's willingness to explore personal themes alongside their signature rock and pop structures. The recording serves as a timeless reminder of growing up, maintaining its emotional impact decades after its initial release.