GRIMMS were an English pop rock, comedy, and poetry group, originally formed as a merger of The Scaffold with two members of the Bonzo Dog Doo-Dah Band and the Liverpool Scene for two concerts in 1971 at the suggestion of John Gorman. The band's name is an acronym, formed from the initial letters of each original member's surname: Gorman, John (The Scaffold) – vocals. Roberts, Andy (Liverpool Scene and The Scaffold) – vocals, guitar. Innes, Neil (Bonzo Dog Band) – vocals, keyboards, guitar. McGear, Mike (The Scaffold) – vocals, percussion.
https://en.wikipedia.org/wiki/GRIMMS