I hadn't even heard of Opeth when I downloaded Black Rose Immortal, but I was amazed by the blend of melody, cool riffs, solos, and acoustic parts. I didn't like the growls at first and actually, to be honest, I thought Mikael sounded rather similar to "Animal" from the Muppets in the beginning of Black Rose Immortal, hehe. After hearing that song, I downloaded Bleak and To Bid You Farewell, Serenity Painted Death, and White Cluster during the rest of the week. The song that actually got me hooked was Bleak though, and I still think it's one of the best songs I've ever heard. At first I only was really into the cleanly sung parts but still liked the guitarwork in the first half... now I seem to enjoy everything about the same, if not the growled parts more.