U2 may try something a little different for their next tour in 2015.

Bassist Adam Clayton spoke with Rolling Stone recently and hinted that the band is looking into performing two nights in each of the cities they go to during their next tour. The catch? One night would be an entirely acoustic performance with the other showcasing the band's electric skills. "One night would be a kind of loud, explosive rock'n'roll kind of event and then the other night's show take the acoustic arrangements of some of the songs, and kind of present those songs in a much more intimate way. But we don't really know how that's going to sound and look," he said.

As NME notes, the idea of an acoustic show at an indoor arena is a little different than the band's grandoise U2 360° Tour, which went from 2009 to 2011 in support of No Line on the Horizon. That trek saw the band hit 110 cities at outdoor venues with a monstrous, circular stage encased by a support structure known as "The Claw."

"We're going to be touring. We're going to start next year," Bono said recently. "We're going try and play The O2 [in London] and places like that, more indoors than outdoors this time, but we'll see where it takes us."

Elsewhere in the RS interview, The Edge said that a motivating factor behind gifting their 13th studio album, Songs of Innocence, was fear of being ignored. "That's the hardest thing right now in music, is to get people to notice," he said. "I'm just watching all of these albums coming out and realizing, 'Wow, they just came and went, and no one noticed.'"

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