Yamaha RM1x

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"The incredible Yamaha RM1x is a complete dance-music workstation that is both a real-time performance instrument and a powerful production tool. An intuitive "hands-on" interface makes realtime operation easy for artists with a DJ background, while in-depth sequencing and editing functions make it possible to create the most complex original patterns from scratch.

The RM1x also features a great-sounding tone generator with an enormous selection of great dance sounds built in. If dance is your style and you want the most powerful performance and production tools right at your fingertips, it doesn't get much better than this: the Yamaha RM1x Sequence Remixer.
An extensive arsenal of 700 outstanding dance-oriented sounds. An awesome assortment of 50 preset styles, 960 pattens ans, 726 phrases.
8 assignable real-time control knobs, a large LCD display panel with 4 display knobs and a large multi-function keyboard.

Each "style" has up to 16 "sections" which can be switched in real time during playback via the RM1x keyboard.
Powerful 16-track sequencer with 110,000-note memory and 480 clocks/quarter note resolution lets you record original material via the RM1x keyboard or an external MIDI keyboard using a versatile range of record modes: realtime replace, realtime overdub, punch-in, step, and grid.
In-depth sequence editing functions make it possible to creat and refine complex patterns and musical textures with extraordinary precision.

Edit and refine the RM1x voices to create sounds that most ideally suit your own music.
A sophisticated multi-effect system can be used to add anything from subtle ambience to wild variations.
Realtime “Play Effects” including harmonize with unison and octave functions, beat stretch, clock shift, gate time, and velocity offset.
Built-in floppy disk drive for convenient, low cost data storage and retrieval.
Full MIDI compatibility."