7 Park Avenue is the first of two posthumous CD releases of demo material recorded by Badfinger's Pete Ham. The recordings are taken from various eras, beginning with compositions he wrote during his years with The Iveys from 1967 to 1969, and running throughout his tenure with Badfinger, ending with his death in 1975.The majority of these recordings were made on The Iveys' Sound-On-Sound Revox mono tape machine. Many of the songs highlight Ham playing all the instruments. However, session musicians occasionally augment some of the tracks, most notably former Badfinger member Bob Jackson and former Iveys member, Ron Griffiths. All of the vocals and guitar licks are Ham's original performances.