The band Converge formed in 1990, when its members were teenagers. They’ve been making music that lives somewhere in the intersection of punk, hardcore, and metal for almost 25 years. Guitarist Kurt Ballou spoke to me from his studio GodCity, which is where Converge writes and records. I also spoke over the phone with singer Jake Bannon. Coming up, they’ll talk about how the physical space of GodCity influenced their songwriting, how the Boston hardcore scene gave them a home, and how to get the classic Swedish death metal guitar tone.