Hey Jude is a compilation album composed of tracks from the A- and B-sides of The Beatles' singles released throughout their career. Originally titled The Beatles Again, the name was changed shortly before its release, likely to boost sales through the recognizability of "Hey Jude." Additionally, "Hey Jude," known from the mono single version, was intended to be released in stereo on this album and serve as a promotional vehicle. However, many collectors bought Hey Jude for the song "Rain," recorded during the Revolver sessions but released only as the B-side of the "Paperback Writer" single.