Answer
Shirley Manson's role in the Scottish rock band Goodbye Mr Mackenzie was as a backing vocalist. She joined the band in 1984 and contributed her vocals to their albums "Good Deeds and Dirty Rags" (1989) and "Hammer and Tongs" (1991). Manson's distinctive voice and stage presence made her a notable member of the band, even though she did not sing lead vocals on any of their songs.