Most tracks can be split up into four distinct components: drums, bass, melody, and vocals. Of course, they could have taken it a step further, by splitting a track up into its individual instruments, but I doubt that would be very usable in a live performance setting (although some performers actually do go this route, usually relying on software such as Ableton Live for this purpose).<p>The four channels are also quite similar to the EQ section of a DJ mixer which generally controls three frequency ranges (low, mid and high). EQ-ing is heavily used to mix songs together, so by sticking to a similar interface, DJ&#x27;s can easily pick up this format.