Eric Clapton

Late Procol Harum leader will be honored at star-studded December show in Guildford, England.

Guitarist teamed up with country singer Bradley Walker to celebrate legend's 90th birthday.

He kicked off first show of new tour with covers of two songs by the Band.

Track is part of double A-side with previously released "Moon River" featuring Jeff Beck.

Rod Stewart, Ronnie Wood and others also performed.

Cover version was recorded not long before Beck's death in January.

This year's two-date concert includes Roger McGuinn, Sheryl Crow, ZZ Top and dozens more.

Expanded version of legendary 1991 Royal Albert Hall shows arrives in June.

Shows will be his only scheduled appearances on the continent this year.

Already confirmed guests include Rod Stewart, Billy Gibbons and Derek Trucks, among others.