Filter sweeps are most commonly used in electronic music because it’s a popular effect that DJs rely on to impose a sense of ebb and flow on the crowd. It’s that underwater effect of gradually surfacing, or opening up, until the chorus finally hits. It can also be the exact opposite, where a producer will gradually close off a ton of the frequency content so it sounds like it’s getting smaller and smaller, before letting it all back in at the perfect moment to slam the chorus back in even harder. This is especially useful if you’re working on a beat-heavy dance remix and you want the bass to be intensely at front and center when it drops. With the advent of systems like the Kemper Profiler and Fractal Audio AX-8, many guitarists are making use of amp simulators instead of using the real thing. Even some of the most well known bands are using them live and in the studio.