Because Mick Jagger and Keith Richards were still honing their songwriting skills, only "Empty Heart" and "2120 South Michigan Avenue" were credited to "Nanker Phelge", a pseudonym for band-written compositions.
The full recording of "2120 South Michigan Avenue", now heard on the remastered 12 X 5, was faded early here for lack of time available on a conventional EP in 1964.