Eric Clapton may have said that he's going to give up touring when he turns 70 in 2015, he's still interested in changing things up now and then. Sources say that he has a few surprises in store during his Crossroads Guitar Festival at Madison Square Garden later this month.

Rolling Stone is reporting that Clapton will open the two-day festival with an acoustic set at 7:30 on April 12. In addition, it is also believed that he will sit in with many of the performers on that first night, including the Allman Brothers for their headlining spot. Slowhand is already set to close the concert with a headlining spot the next day.

Although the schedule has not been announced, the lineup for the fourth Crossroads Guitar Festival is nonetheless impressive. Clapton has recruited top guitar slingers from blues and rock (Buddy Guy, Jimmie Vaughan, B.B. King), jazz (John Scofield, Earl Klugh) and country (Keith Urban, Vince Gill, Brad Paisley) for the concerts. More information can be found at the festival's website.

The Crossroads Guitar Festival will also serve as the final dates on Clapton's current tour in support of his new album, 'Old Sock.'

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