Sgt. Pepper's Lonely Hearts Club Band stands as one of the most seminal rock 'n' roll albums of all time and certainly has been analyzed and picked apart for every kernel of musical wisdom. But the record was more than just a collection of studio innovations and legendary tunes; it also marked the first time that a rock album included the complete lyrics on its cover design. The original 1967 LP has a back cover filled with every word from every song on the album. With a little help from the Beatles, singing along to this hit record was a piece of cake.