Released on the Beatles' 2000 anthology compilation Anthology 1, "Mr. Moonlight" is a rare studio recording featuring the band's full lineup. The track, written by George Harrison, stands as one of his most personal compositions, reflecting on the fleeting nature of youth and the passage of time. Unlike many of his contemporaneous works, it was recorded with a distinct, dreamy atmosphere that highlighted Harrison's evolving songwriting maturity. While not originally issued as a single, its inclusion in the anthology series brought renewed attention to this intimate piece within the broader context of the group's discography. The song remains a poignant example of Harrison's ability to blend poetic lyricism with melodic simplicity, capturing a specific emotional state without relying on overt drama.