Florence + the Machine: Nevah, she's done fine
Marina and the Diamonds: Nothing I can think of, she even gave us a b-side of Electra Heart on Valentines Day, so I'm really happy with her.
Lady GaGa: Ugh, Monster Never getting released, Scheiße, Government Hooker, and Heavy Metal Lover not getting released, the terrible Marry the Night and Edge of Glory videos, the prosthetic horn at the beginning of the BTW era, never releasing the Mariachi version of Americano, no second BTW video, the list goes on...
Ke$ha: Not releasing Harold's Song, releasing C'mon, and disappearing for like ever.
2NE1: All the damn hold backs, still no "Take the World On," no release date for the English album. I just need new music
Evanescence: The entire "Evanesecence" album, it's too guitar-y and not enough Amy.
Natalia Kills: Not releasing the Perfectionist WW at first, that's it.
iamamiwhoami: Flawless bitch.
La Roux: The "Tigerlily" video never happening, the era ending abruptly, no news, no new music, nothing.
Lana Del Rey: SNL
Sky Ferreira: She just needs to get her **** together and release her damn debut album. She should have released it back when she was making electronic-esqe music.