Post-Rock Fusion: Chicago in the '90s

For cutting-edge genre-bending music, the place to be in the ‘90s was Chicago. Post-rock bands like Tortoise were pushing the envelope of modern rock with '70s-inspired progressive grooves, while instrumental groups like Brokeback were fusing hip-hop beats with minimalist jazz using little more than a six-string Fender bass. Meanwhile, noise-rock acts like U.S. Maple combined punk with free jazz.