Aerosmith vocalist Steven Tyler and guitarist Joe Perry were expected to join the legendary rap trio Run-D.M.C. onstage at the House of Blues Thursday night (March 4) for a performance of "Walk This Way," an Aerosmith song Run-D.M.C. recorded in 1986 with Tyler and Perry, scoring their biggest hit to date. There was no word at press time whether the onstage union would extend beyond a performance of that song. Run-D.M.C. recently spent time in the studio working on material for their first album in more than four years, which may hit stores as early as June, according to a group representative.