Keith Richards, Eric Clapton join forces for Hubert Sumlin tribute

The Rolling Stones' Keith Richards and Eric Clapton were among a flock of rock and blues superstars who turned up in New York City last Friday (2/24) to pay tribute to late bluesman Hubert Sumlin.

The four-hour show at the sold-out Apollo Theatre in Harlem also brought out Buddy Guy, Elvis Costello, Warren Haynes, ZZ Top's Billy Gibbons, Taj Mahal and many others to honor Sumlin, who was Howlin' Wolf's longtime guitarist. Sumlin died in December at the age of 80.

In addition to noting Sumlin's passing, the concert was also a benefit for The Jazz Foundation, which provides aid to jazz and blues musicians.

Other big names in attendance -- and onstage -- included Keb Mo, Robert Randolph, Haynes' Allman Brothers Band partner Derek Trucks, Jimmie Vaughn, and blues harp pioneer James Cotton.

Sumlin's memorial service in December was paid for by Richards and fellow Rolling Stone Mick Jagger.