The range of drum kits built into the RT-223 is simply amazing. A total of 70 drum kits are built-in, with acoustic drum sounds for rock, R&B, funk, and jazz. Add an analog rhythm machine great for Techno and Hip Hop. Ethnic percussion sounds are also available. There are also five Human Voice "Beat Box" Percussion kits that are currently all the rage in Hip Hop. Create advanced rhythm tracks where kick, snare, scratch and other instrument sounds are expressed as human voices.