"He came on as a guest of Cream, and that in itself was a pretty extraordinary moment for me because..."
Mason is also happy to be doing his own project at the moment.
Watch the trippy live performance here! It'll take you right back to the early Pink Floyd days when Syd Barrett was still around.
Watch all the performance videos here, including sets by Manfred Mann's Tom Jones, Paul Carrack and Mike Rutherford, Rick Wakeman and more.
The band also shared their live performance of 'Fearless' at London's Roundhouse.
