Within two months of their songwriting debut, Fyre and Guthrie's "Music Machine" had written several songs that made the Billboard charts, but their relationship with Penumbra Music soon broke down due to personal differences. Guthrie quit writing with the company to become a solo session singer. One week later, Fyre wrote one final song for Penumbra, "Satan's Daughter", which appeared on the GG album of British glam rock artist Gary Glitter. Further projects in development with Fleming Williams and film composer Michael R. Colicchio were abandoned.
