The Sequetron - Keyboard Sequencer Recorder

YouTube via philtipping
Note there is a Windows version. This reminds me of the Oberheim Cyclone and Techno Toys ARP-8

Playlist:
The Sequetron - Keyboard Sequencer Recorder
Sequetron Tutorial 1 - Pitch Controls
Sequetron Tutorial 2 - Recording Sequences
Sequetron Tutorial 3 - Metronome Controls (revised 25/03/10)
Sequetron Tutorial 4 - A Little Ditty
Sequetron Tutorial 5 - Channels & PitchMode Controls
The Sequetron MkII plays microKORG, demo part 1
The Sequetron MkII plays microKORG, demo part 2
The Sequetron MkII plays microKORG, demo part 3
The Sequetron MkII Configuration Demo
Sequetron MkII overview with drum sampler & synthesizer

The following is the description for the first video from December 2007. It's meant to give you an idea of what this program is. Be sure to check out the site for updates.
"A program for improvising, jamming or just having fun.
Full info & downloads at www.philizound.co.uk under Freebies.

The Sequetron is a program for converting an ordinary MIDI keyboard or input device into a live sequencer-like instrument for real-time multi-track recording, playback & looping. The *same keys* you use to play also control the system while you are playing it, so you never need to touch your PC keyboard or mouse :)

Sequences can be recorded, played back, looped and controlled independently, and synchronized to an external MIDI clock if required. There is no restriction on the number of 'steps', nor does the sequence have to be monophonic; any notes & chords can be used. The output can be any MIDI device such as a synthesizer, drum machine, light display etc.

Sequence attributes such as pitch, velocity, channel, mute etc., can be changed while they are playing, either individually or in any combination; automatically taking place at the end of their respective cycles to maintain a rhythmic feel.

This ability to record, play & alter different length sequences starting at different times on-the-fly gives the Sequetron its unusual syncopated feel, encouraging you to experiment with overlaying and controlling patterns; even the most basic 1, 2 or 3-note sequences can create something totally unexpected."