I did a post in the "I miss the accidents" thread about this, but I can't bloody find it.
Anyway, I think ACYTLB is perhaps U2's only album that is filled with a deep sense of calm. Which is a good thing when you need a comforting album. Not my favourite, but it is a very practical album.
I posted this in the "Worried" thread, and it also kinda works here. Sorry if you've read it before.
What is innovation in music?
Since the Beatles, most people boil down innovation to three things:
1. Sonic Innovation - New textures, using the studio as an instrument.
2. Songwriting Innovation - Wacky time signatures, different structures (not the same "verse, chorus, etc." format)
3. Genre Blending - Like the Beatles' Eastern influence, like Bowie's constant dabbling into disco, space rock, industrial, whatever.
Radiohead, for example, has been innovative in all three ways. Bob Dylan has been innovative in ways 2 and 3. (You can certainly disagree, but this is not the main point.)
But I think this way of looking at it misses out on what I think is the most important innovation. Emotional Innovation. When a group writes a song that conveys an emotion not before expressed into the genre their working in, I love it. U2 have certainly done this kind of innovation. Also, some groups have a very special spirit, a chemistry, which breaks through in their music. The songs, upon heavy analysis, may not be very special, but their is a certain something that comes through the music. (For example, think of some of the Rolling Stone's stuff.) A group may not only bring new emotions to a genre, they may bring a new spirit or a new way of looking at band chemistry.
I love the three types of innovation at the top, but I think that the last type is the most important. I hope the new album explores some new emotional territory. Songs that affect me in a new, or a more powerful, way. The other types of innovation would be nice, I would really like some sonic innovation, but it is not as important as the emotions and spirit of the music.