Ye but the album’s release has also put a lot of U2’s back catalogue (conveniently on sale) into the top charts on iTunes: The music industry always expects new releases to spur the sales of old albums, but in this case iTunes buyers seem particularly receptive: Right now there are 17 old U2 albums on iTunes top 100 chart; a remastered version of “The Joshua Tree,” the band’s 1987 release, is at the No. 12 spot. Money, Money, Money! That's what it's all about.