Roger Waters has just announced that he will be joining the bill of this coming Monday's (February 17th) concert to honour a very special drummer. Eric Clapton Friends: A Tribute to Ginger Baker takes place at London's Eventim Apollo (formerly the Hammersmith Odeon).The set list for the concert will look to honour Baker's lifetime in music and will, of course, include Clapton and Baker's work together in Cream and Blind Faith. The event will be held in aid of Leonard Cheshire, a charity close to the Baker family, which supports disabled individuals to live, learn and work as independently as they choose, whatever their ability, at the heart of local life - opening doors to opportunity, choice and support in communities around the globe.The rest of the line-up has yet to be announced; tickets for the concert sold out a long time ago, unsurprisingly.Some of you will be aware that this won't be the first time that Eric and Roger will have worked together on stage - Roger's 1984 Pros And Cons Of Hitchhiking tour included Eric on guitar in the band, to great acclaim. Roger's announcement of this earlier today on his social media was quite low key, and follows an earlier video he posted running through the chords of Sunshine Of Your Love, without explanation of why he was doing it. Now we know!UPDATE: The line up for the Tribute consisted of Eric Clapton, Paul Carrack, Chris Stainton, Sonny Emory, Steve Gadd, Willie Weeks, Katie Kissoon and Sharon White. The special guests were Steve Winwood, Roger Waters, Nile Rodgers, Ronnie Wood, Kofi Baker, Kenney Jones, Henry Spinetti and Will Johns.Roger appeared on the first three songs on the night: Sunshine Of Your Love, Strange Brew and White Room. The encore was a cover of Robert Johnson's Cross Road Blues, which featured all the artists, and notably Roger Waters on cowbell for the last half of the song!There were discrete cameras around the venue, certainly to show the musicians on the screen at the rear of the stage - we are hoping that the performance was recorded for eventual release. We'll keep you posted on that front...