Post-hardcore is a punk rock music genre that maintains the aggression and intensity of hardcore punk but emphasizes a greater degree of creative expression. Like the term "post-punk", the term "post-hardcore" has been applied to a broad constellation of groups. Initially taking inspiration from post-punk and noise rock, post-hardcore began in the 1980s with bands like Hüsker Dü and Minutemen. The genre expanded in the 1980s and 1990s with releases by bands from cities that had established hardcore scenes, such as Fugazi from Washington, D.C. as well as groups such as Big Black, Jawbox, Quicksand, and Shellac that stuck closer to post-hardcore's noise rock roots. Dischord Records became a major nexus of post-hardcore during this period.

Noise rock is a noise-oriented style of experimental rock that spun off from punk rock in the 1980s. Drawing on movements such as minimalism, industrial music, and New York hardcore, artists indulge in extreme levels of distortion through the use of electric guitars and, less frequently, electronic instrumentation, either to provide percussive sounds or to contribute to the overall arrangement.