Vol. 3 Roy Orbison died of a heart attack on 6 December 1988. In tribute to him, the music video for the band's second single, "End of the Line", shows Orbison's guitar rocking in a chair when his vocals are heard. Lynne recalled that Orbison's death in the wake of Vol. 1s success was "the most sickening thing to me". He added: "I was devastated for ages ... Me and Roy had had plans to do much more together, and his voice was in really good shape. It was just so sad for that to happen." Although there was speculation in the press that Del Shannon or Roger McGuinn might join the Wilburys, the remaining members never considered replacing Orbison. Lynne later said: "We'd become this unit, we were all good pals … We always knew we were going to do another one, and now it's just the four of us." Harrison was the most active in promoting the Wilburys, carrying out interviews well into 1989. He said he was "wait[ing] for all the other Wilburys to finish being solo artists" so that they could renew the collaboration. By contrast, according to author Clinton Heylin, Dylan appeared to give the band little attention as he focused on re-establishing himself as a live performer before recording his 1989 album Oh Mercy. In March 1990, Harrison, Lynne, Petty and Dylan reunited to work on a second Wilburys album, which they intentionally misnumbered Traveling Wilburys Vol. 3. It was preceded by a non-album single, a cover of "Nobody's Child", which the band recorded for Olivia Harrison's Romanian Angel Appeal charity project. The duration of the main album sessions was again dictated by Dylan's touring schedule and limited availability. Having asked Dylan to record a lead vocal for all the songs before his departure, Harrison was then loath to replace many of the parts, resulting in a greater prominence for Dylan as a lead singer. Although he ceded his own role as a lead vocalist to Dylan and to Petty, Harrison took over more of the production and contributed more prominently as a lead guitarist than before. Petty described the album as "a little more rough and ready, a bit more raucous" than Vol. 1, while Dylan said the new songs were more developed as compositions relative to the "scraped up from jam tapes" approach to the band's debut. Vol. 3 was released on