Alkaline Trio played a tight-knit set to a very enthusiastic crowd this past weekend at Metro, to celebrate the release of their new album, This Addiction. So many people were pumping fists and singing along, I felt sheepish that I admittedly don’t know any songs by heart (except for their cover of The Misfits’ “Attitude”). You could tell that in addition to being Chicago natives, this band has a long, solid fanbase.