The coastal town of Gothenburg is Sweden's second-biggest city, but it's not a big city; you can walk across the whole place in a couple of hours. (If you get a chance, do that. It's beautiful.) But for a place that's really, in the grand scheme, just a blip, Gothenburg has a rich and confounding musical profile. The artists who come from that place tend to be hard to pin down. The Knife make seething, intense electro-punk into grand-scale experimental theater. José González does confessional singer-songwriter music that's built around rhythm. The city has a whole scene of woozy DIY pop artists -- JJ, Tough Alliance, Air France -- whose presentation is built around being as mysterious as possible. And it has a whole scene of extreme-metal titans -- At The Gates, In Flames -- whose whole sound is built around being as catchy and melodic and triumphant as possible.