This is the current state of U2's new album, under construction with producer Danger Mouse since 2010: There are "about 30 songs we're really excited about, in various states of being finished," says guitarist the Edge. Of those tracks, "six or seven" are "mixed and ready to go." And there is a thematic connection. The first song issued from the sessions, the pneumatic electronica of "Invisible," started as a "Ramones-like" demo, the Edge says, adding that much of the album is rooted in the mid- and late-Seventies music that influenced U2 as they were starting in Ireland. "That's a rich period, one we've visited many times in the past," he notes. "But it's a very Dublin-centric record lyrically." U2 have not chosen an album title – "We have a few," the Edge says – and there is no release date yet. "But we're getting there," he promises. "We're not, as we say in Ireland, up our own arse. But we do not want to let go of anything if we are not 100 percent happy with it."