About Tarja getting fired... She can't live without Nightwish, and Nightwish can't live without her. Both will fizzle out and die without each other. Tarja has been successful with her Christmas album, while Nightwish.... Hasn't. Tarja might have one or two more albums, but the only way she can be really successful is if she finds a new band or comes back to Nightwish. Though, I doubt Tarja will ever come back to Nightwish, and if she does it wouldn't be the same as before. Ok, got the Tarja thing out, now for the Nightwish side... With someone else, the songs wont sound the same. Sleeping Sun, for example, probably wouldn't appeal to people without Tarja's deep voice and accent. I looked at the auditions, and honestly, most of them are really bad :-s. Only one or two were good enough to cover Tarja's tracks, IMO. If they manage to pick a good one (I still have hope!!), they could be mildly successful, but not as much as they were with Tarja Nightwish auditions here Best auditions IMO here and here