In Mike Kuzmin Jr.'s "Sounds From The Woods", he only lists the 45 on Jamie, not the one Mike mentioned. There is a picture of the band the High Keys also but no Johnny. year put as 1969.
Surfing on the internet I found that there are two songs of Johnny & The High Keys on the comp Absolutely Allentown (also The Christmas Game) - maybe the song was first released on the regional Hi-Mar-label from Pennsylvania as Johnny & The Hi-Keys and later nationally released on Jaimee as Johnny & The High-Keys - could just be a typo.