U2 are back in Barcelona, the city where they kicked off their 360° Tour in 2009, as part of the new Innocence + Experience Tour. In the first year, the band will visit 19 cities in countries all over the world, and will play in more 'intimate' venues, according to a representative from the concert promoter, Live Nation. In Barcelona, the only stop on the Iberian Peninsula, they're playing at the Palau Sant Jordi, which isn't as intimate as, say, Razzmatazz, but slightly more so than the Olympic Stadium, for example. The band are playing at least two nights in each city on the tour. 'We're trying to make it so concerts in the same city are each different,' says Bono, 'and we're having fun playing with the idea of “innocence and experience”.' The tour, which started in May in Canada, is helping promote the Irish band's 13th album, ‘Songs of Innocence’ (2014), which was free for all U2.com subscribers and millions of iTunes users. ‘Songs of Innocence’ has been reproduced 81 million times and has been downloaded by 30 million fans.