After scoring a minor UK hit with the single "My Sex," Ultravox returned later that year with Ha! Ha! Ha!; sales were minimal, however, and Shears soon exited, replaced by guitarist Robin Simon. A third LP, 1978's Systems of Romance, was recorded in Germany with renowned producer Conrad Plank, but it too failed commercially; Island soon dropped the band, at which time both Foxx and Simon quit, the former mounting a solo career and the latter joining Magazine. At that point the remaining members of Ultravox tapped singer/guitarist Midge Ure, an alumnus of Silk as well as Glen Matlock's Rich Kids; upon signing to Chrysalis, the new line-up recorded Vienna, scoring a surprise smash hit with the single "Sleepwalk," which reached the number two spot on the UK pop charts in 1981 and pushed the LP into the Top Five.
After 1981's Rage in Eden, Ultravox teamed with legendary producer George Martin for 1983's Quartet; their most successful LP in the otherwise impenetrable American market, it launched the minor hit "Reap the Wild Wind." Upon completing 1984's Lament, Ure -- who had co-written the Band Aid charity single "Do They Know It's Christmas" -- left Ultravox to forge a solo career, topping the UK charts a year later with the solo smash "If I Was; " the remaining members, adding Big Country's Mark Brzezicki, resurfaced with U-Vox in 1986 before going their separate ways. Currie and Simon reformed the band as U-Vox in 1993, adding vocalist Marcus O'Higgins; three years later, they released the lackluster Ingenuity. ~ Jason Ankeny, All Music Guide