Speedcore style of techno music, characterised by high of beats per minute and aggressive themes. The name originates from the high BPM, which is always higher than 200 BPM. Earlier Speedcore tracks averaged at about 250 BPM, whereas more recent track sometimes exceed 1000 BPM. Some people classify higher BPM tracks (around 500-600 BPM), as splittercore, and upon reaching 1000 BPM and beyond, the music becomes known as extratone. Whether these terms are necessary or widely used is debatable, partial because of the human ability to perceive differences in BPM at these speeds.
Aside from the very fast tempo of speedcore, which rarely drops below 240 BPM, speedcore can often be distinguished from other forms of hardcore techno by an aggressive and overridden electronic percussion track that is often punctuated with hyperactive snare or tom-tom fills. The Roland TR-909 is often the drum machine of choice for speedcore producers due to its ability to generate heavily distorted bass-drum kicks that anchor the percussion tracks. Most producers will often overdrive their kicks so much that they become square waves, much like in Gabber, giving Speedcore its distinctive pounding sound. As with many other forms of techno, synthesizers are also heavily used, often producing heavily distorted and/or disharmonic melodies to complement the underlying drums. Although any analog or hybrid synth can be used, the analog/digital hybrid Roland Juno-106 is a common favorite with speedcore artists.
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