Last spring in New York City, Eric Clapton once again assembled an unparalleled lineup of the world's most celebrated guitarists for the fourth incarnation of his legendary Crossroads Guitar Festival. While the previous three festivals were all hosted in sprawling outdoor stadiums, Clapton took the festivities indoors for the first time this year to "The World's Most Famous Arena" Madison Square Garden. You can soon relive highlights from that epic, two-night display of guitar virtuosity with new video and audio collections coming this fall from Rhino. This year's shows featured performances by Clapton, the Allman Brothers Band, Blake Mills, Buddy Guy, Derek Trucks, Doyle Bramhall II, Gary Clark Jr., Jeff Beck, John Mayer, Keith Richards, Keith Urban, Los Lobos, Robert Cray, Sonny Landreth, Steve Cropper, Vince Gill, Warren Haynes and more. "Crossroads Guitar Festival 2013" features nearly five hours of music across 45 tracks, plus conversations with the artists and other behind-the-scenes footage from this all-star concert. In addition to rousing performances of blues classics and renowned hit songs, many of the most memorable performances saw artists coming together for some stirring collaborations. Among the highlights were the surprise pairing of John Mayer and Keith Urban for the Beatles' "Don't Let Me Down," Vince Gill and Clapton taking on "Lay Down Sally," Keb Mo and Taj Mahal covering the Sleepy John Estes' song, "Diving Duck Blues," Gill performing "Tumbling Dice" with Urban and Albert Lee and members of the Allman Brothers - Gregg Allman, Warren Haynes and Derek Trucks - joined forces for a haunting acoustic cover of Neil Young's "The Needle and the Damage Done." As you would expect, Clapton features prominently throughout the show, including with his own band for "Tears In Heaven." The legendary guitarist also tore through the Derek and the Dominos' classic "Why Does Love Got to Be So Sad" with the Allman Brothers Band, revisiting the time in 2009 when he joined the band during their annual residency at the Beacon Theater in New York.