In 1981, Mayo was asked by Joey Kramer of Aerosmith to play keyboards in his band Renegade fronted by vocalist Marge Raymond. In 1983, Mayo played keyboards on Aerosmith's first tour in three years, in support of their Rock in a Hard Place album, also adding background vocals.
In 1981, Mayo joined Joey Kramer's band Renegade, featuring Marge Raymond as the lead singer.  He then contributed to Aerosmith's comeback tour in 1983, playing keyboards and providing backing vocals on their album "Rock in a Hard Place".