What was the Beatles' first big hit?

Two days after the first television special in the series had aired, Anthology 1 was released to stores, and included music recorded by The Quarrymen, the famous Decca Records audition tapes, and various out-takes and demos from the band's first four albums. The song "Free as a Bird" was included at the very start. 450,000 copies of Anthology 1 were sold in its first day of release, the most sales for an album in a single day ever. The Beatles' original drummer Pete Best, fired by the band in 1962 before they hit it big, received his first substantial Beatles royalties from this album, for the inclusion of early tracks on which he played. (The courtesy did not extend to the cover art - an early group photo in the cover collage featured a strategically-placed rip, revealing the image of Ringo Starr in place of Best).