For instance, The Beatles "The Inner Light" released as the B side to lady Madonna in 1968 wasn't on an album till the 1978 Beatles collection blue box set on the rarities LP. Unless you count a 1971 Spanish Beatles Album. The Grateful Dead studio version of "Dark Star" released in 1968 as a single, 1,600 were printed, maybe 500 were sold and wasn't available until the album "What A Long Strange Trip It's Been in 1978. Bob Dylan's live version of "Just Like Tom Thumb's Blues" released with "I Want You" on a picture sleeve. It wasn't on an album until the Bootleg series.