Quite similar thread to "bands from fallen from grace" but with a different purpose. That one was more for bands that were big for a longer period of time (the way I see it). This thread is more for bands who had great debut albums, and maybe one more after it, only to start sucking immensely, hence never becoming the "next big thing"/fulfilling their potential/living up to the hype. I'll start! Ensiferum IMO their first two albums are one of the best albums ever. And by that I mean, in Top 100 at least I'd describe it as Metallica playing folk/melodeath. Lots of influence in the riffs and production (Flemming Rasmussen produced the second one!). Yet after the second album, all members left except for one. Third album is very different, and although it has some good songs, overall it's nothing special. The next two are big failures. Nowadays, they can't capture 1% of the awesomeness of the early era of the band, live or in studio, which is quite sad. Turisas Again, first two albums are classics of the genre. Again, a Finnish band First two albums were varied, epic and bombastic. Third one was just OK. And the fourth one is a big pile of crap, and based on their attitude about it, they don't seem to realize how utterly crap it is. Also, numerous member changes after the second album made me stop care about the band altogether.