Cozy Powell, Ozzy Osbourne, and B.B. King.
Incidentally, Elton's name briefly came up again a couple of months ago, when Marsden spoke with British GQ.
He spoke about recording a Whitesnake album in John Lennon and Yoko Ono's Berkshire home, then owned by Ringo.
"With only four days off after the Ready An’ Willing tour, we started the new album in July 1980 at Ringo Starr’s fabulous house in Ascot, Berkshire.
"His studio, Startling, was a private facility in the former home of John Lennon and Yoko Ono, Tittenhurst Park. We were very fortunate to be given this chance to work where John Lennon had recorded the unparalleled album Imagine.
"When I first saw the glass panel above the door with the inscription by Yoko Ono, 'This is not here', I got a tingle down my spine. In the kitchen I saw the very table where George Harrison, Eric Clapton, Phil Spector, Bob Dylan, Keith Moon and Elton John had sat many times. The John Lennon film Gimme Some Truth shows you the object itself. I’ve had my breakfast in that kitchen, at that table, sometimes sharing the space with the very young Zak Starkey [Ringo’s son] before he went to school. All of us had a similar reaction in those first few days at Tittenhurst: even Jon and Ian were a little in awe of the place. The rest of us certainly were."