What is a breakdown in music?

A breakdown is a musical section characterized by a sudden change in rhythm, dynamics, or both, often accompanied by powerful guitar riffs or heavy drumming patterns. It usually occurs near the end of a song or section, and is designed to create a dramatic effect and allow for a release of tension that has been building up throughout the piece. Breakdowns are commonly found in heavy metal, hardcore punk, and other genres of music that rely on strong, rhythmic patterns to evoke energy and intensity from their listeners. They can be instrumental or accompanied by vocals, and often feature repeated, chugging guitar riffs or breakdown drums that build in intensity until the climax of the section. Some of the most well-known breakdowns include those in Metallica's "One," Pantera's "Walk," and Rage Against the Machine's "Killing in the Name."