Speedcore, Speedcore

The range of bpm is quite vague, some people claim the minimum beats per minute start at 230bpm, but this is not clear. Also, the bpm limit is vague, while the earlier tracks were mostly based around 250bpm, it is not uncommon for more recent speedcore tracks to reach over the 1000bpm mark. However, people have started to apply different terms to certain speedcore, depending on the BPM. Opinions differ, but upon reaching around 500 - 600bpm, the music becomes known as "splittercore," and upon reaching 1000bpm and beyond, the music becomes known as "extra tone." There are YouTube videos describing this, one even showing a tempo of an astounding 86400 bpm. and other videos showing different levels of extremity, some songs even reaching as high as 15,000bpm. How necessary these terms are is debatable however, as being able to tell if something has reached splittercore tempo is nearly impossible.

The music is angry, aggressive, and often attempts to foster an atmosphere of hostility for the listener. Speedcore DJs often use offensive themes in their music to create such extremes.

Most producers will often overdrive their kicks so much that they become square waves, much like in Gabber, giving Speedcore its distinctive pounding sound.

Source: Wikipedia > Speedcore