The band's first album soared to US sales alone in excess of four million.
The prog-rock legends will be joined by Asia, John Lodge of The Moody Blues and Carl Palmer’s ELP Legacy.
The band name 3.2 refers back to 3, the short-lived band featuring Emerson, Carl Palmer and Robert Berry.
Steve Hackett, Steve Hillage and King Crimson are among the winners honoured at the 2017 Progressive Music Awards at the Underglobe in London
A Tribute To Keith Moon: There Is No Substitute, a new tribute to the late Who drummer compiled by Ian Snowball, has been newly published by Omnibus Press.
Carl Palmer is to mount a North American tribute tour for his former ELP colleague Keith Emerson, who passed away at the age of 71 on 10 March.