Paul McCartney honors Stones drummer Charlie Watts

Paul McCartney paid a moving video tribute to Rolling Stones drummer Charlie Watts, who died on Tuesday.

McCartney sent condolences in a video message. "I knew he was ill but I didn't know he was this ill... It's a huge blow to them because Charlie was a rock and a fantastic drummer."

Watts played drums on all of the Rolling Stones' 30 albums and on every tour. No cause of death was given for his passing, but the announcement followed an Aug. 4 statement by the band that the drummer was pulling out of its rescheduled No Filter U.S. tour because he needed time to recuperate after an unspecified emergency medical procedure.

He was 80 years old.