tour supporting this effort, Perry released his first solo album, Street Talk (the album's title was derived from the original name of Perry's earlier band Alien Project). The record sold more than 2 million units, scoring the hit singles No. 3 "Oh Sherrie", written for his then-girlfriend Sherrie Swafford, and No. 18 "Foolish Heart". The music video for "Oh Sherrie" saw heavy rotation on MTV. "She's Mine" and "Strung Out" were also released as singles from this project, which featured former Alien Project drummer Craig Krampf on a few tracks, guitarist Michael Landau, and future American Idol judge Randy Jackson on bass, among others. In 1985, Perry was one of 21 singers on the USA for Africa all-star benefit song "We Are the World". He also recorded a song, "If Only For the Moment, Girl" for the We Are the World album. This song was added to the reissue of his album Street Talk. Also during this period, Perry worked with the Irish folk-rock group Clannad on their 1987 album Sirius. While Perry was reuniting with Journey, his mother became ill. The recording of Raised on Radio, which Perry was producing, was stop-and-go as he frequently returned to the San Joaquin Valley to visit his mother, who died during the production of the album. It took a major toll on Journey to have intermittent recording sessions and a vocalist who was not with the band much of the time. Eventually, Perry became exhausted from the ordeal. Journey then went into hiatus in 1987 after the Raised on Radio tour. In 1988, Perry began to work on another solo album, Against the Wall, which he ultimately left unfinished (though several of the songs that were recorded for Against the Wall would appear on Perry's 1998 solo compilation, Greatest Hits + Five Unreleased). A year later, on April 30, 1989, at the Shoreline Amphitheatre, in Mountain View, California, Perry joined Bon Jovi to perform Sam Cooke's "Bring It On Home to Me" and the Four Tops' "Reach Out". He would also reunite with Journey at the Bill Graham tribute concert, "Laughter, Love and Music" on November 3, 1991, at Golden Gate Park in San Francisco, performing "Faithfully" and "Lights". Other than those three events, however, Perry mostly disappeared from the public eye for seven years, taking a break from the music industry. In 1994, Perry released For the Love of Strange Medicine,