Released in 1966, '1921' stands as a defining track in the catalog of The Who, capturing the band's transition from garage rock to a more polished, theatrical sound. The song features the iconic 'Who's on First' guitar riff, a signature element that became synonymous with the group's energetic live performances and studio recordings. Lyrically, the track explores themes of historical revisionism and the absurdity of trying to rewrite the past, reflecting the cultural anxieties of the mid-1960s. It showcases the band's signature blend of rock energy with theatrical flair, delivered by the vocal prowess of Roger Daltrey and the driving rhythm section of Keith Moon and Pete Townshend. As a staple of their discography, '1921' remains a powerful example of British rock at its peak, influencing countless artists who followed.