10 Things You Didn't Know About The Beatles' Sgt Pepper Album
4. The Lyrics In The Sleeve Was A First
One of Sgt. Pepper's defining characteristics was the fact that its songs' lyrics were printed on the album cover's sleeve. Oddly enough, this was the first time this had ever been done on any record.
Fast forward to today, and it's quite uncommon if an album's liner notes don't include lyrics to the songs.