P!atd is the perfect example, because they changed genres. I liked them because they made me want to party. And sing fast.
Then the next album was like, indie rock.
Idk. It wasn't for me, ya know?
They still have some songs that really make you want to dance. "Hurricane" is a perfect example.
You want a band that turned from upbeat alternative to depressing indie rock, look no further than Jimmy Eat World.
As for expirimentation, my FAVOURITE Faith Hill album is her pop-rock album
Cry which has barely a tinge of country anywhere in it. Critically, she was slaughtered for it because everyone WANTED country from her, but to some of us, she's never made better music since.
And then you have artists like Christina Aguilera who have reivented herself every album. In the general opinion (mine included) her newest album
Bionic was a total flop, but it's good that she tried something new . . . . the only problem with her is going to be that she needs to give us a filler album before she tries to reinvent herself again, because she really hasn't stood still yet. She went from highly manufactured bubblegum pop, to dirty, gritty harder pop-rock to, her pinacle, the jazzy, power-vocal album of back to basics . . . and now she's got theis weird synthetic and so-raunchy-you-feel-dirty-just-by-listening-to-it lyrics that fill up bionic.
Oh and another group I like that has reinvented has been My Chemical romance . . . . but whatever they did when they made their new album
Danger Days: The True Lives of the Fabulous Killjoys , I wish they'd just UNdo. 3CFSR and TBP were both AWESOME and, while 3CFSR was more traditionally "emo" and darker, TBP was certainly well within their comfort zone.... DD is so weird for them. it's post-apocolyptic rock . . . so it's got the darkness you expect from MCR, but they have, like, one good hook in the whole album . . . and the sound is just . . . . not them.