Joe Perry left Aerosmith in 1979 because of band conflicts. He released The Joe Perry Project’s debut album shortly thereafter. A couple albums later Brad Whitford, the other guitarist in Aerosmith would also join the Joe Perry project.
Perry and Whitford returned to Aerosmith in 1985, returning them to their original band lineup. Although Perry has released solo material since rejoining Aerosmith, and toured again with The Joe Perry Project, he has also remained a member of Aerosmith, who have remained in their original lineup for more than 30 years.