It was numerous years ago, when I first heard Swedish melodic death metal band Dark Tranquillity. I liked their songs already then, but it took until this week that I bought their album. It cost just 10 euros and there are many damn good songs on this collection, but it's definitely not everyone's cup of tea, so to speak.

Some of my fave songs:
Misery's crown (official video)
Lost to apathy (official video)
The sun fired blanks (audio)