Sir Mick Jagger and Keith Richards have paid tribute to their bandmate Charlie Watts, following the death of the Rolling Stones drummer.
Beatles Sir Paul McCartney and Sir Ringo Starr were among the other stars from the world of rock to remember Watts.
Sir Paul described Watts as "a lovely guy" and "a fantastic drummer" who was "steady as a rock", while Fab Four drummer Sir Ringo said on Twitter: "God bless Charlie Watts we're going to miss you man".
Sir Elton John wrote on Twitter: "A very sad day. Charlie Watts was the ultimate drummer. The most stylish of men, and such brilliant company."
The Beach Boys' Brian Wilson said he was "shocked" to hear the news about Watts, who he described as "a great drummer".
The Who frontman Roger Daltrey said Watts was the "perfect gentleman, as sharp in his manner of dress as he was on the drums".
And drummer Kenney Jones, who played with The Who and the Small Faces told the BBC Watts was the "heart and soul of The Rolling Stones".
His jazz-inflected swing gave the Stones' songs their swagger, pushing and pulling at the groove, creating room for Jagger's lascivious drawl.
He was at his best on the cowbell-driven Honky Tonk Women or the locked-down groove Gimme Shelter (where he even threw in some uncharacteristically showy fills).
On and off the stage, he was quiet and reserved - sticking to the shadows and letting the rest of the band suck up the limelight.
"I've actually never been interested in all that stuff and still am not," he told the San Diego Tribune in 1991. "I don't know what showbiz is and I've never watched MTV. There are people who just play instruments, and I'm pleased to know that I'm one of them."