 Hart designed most of Hüsker Dü's album covers.In 1986, Hüsker Dü became one of the first key bands from the American indie scene to sign with a major label, inking a deal with Warner Bros. Records.However, tensions within the band worsened after signing with Warner Bros. Hart became addicted to heroin following the band's tour behind their major label debut "Candy Apple Grey" in 1986; he was also (incorrectly) diagnosed as HIV-positive in the middle of that year.