Here's a late 1970's drum machine with toms, cymbal, snare and cowbell - lots of presets with a variable beat dial. It has drums, bass, piano and organ all rolled into one.
"Introducing the first and only band that doesn't drink, smoke, show up late, fool around, play to loud, argue, complain, or get all the good looking ones."
I have posted a simple drum and bass sample on SoundCloud under ClaytonAudio. -- At the end of the sample I'm wiggling the Envelope dial kind of like a DJ scratch - interesting effect.
And the amp I'm using for this sample has a full range speaker - not a guitar speaker. If you hook it up to a regular guitar amp - that won't do. This system was designed for running through a PA or dedicated amp with a full range speaker.
Here are a couple samples - the first one has drums, bass, piano, and organ - the second just bass and drums.
soundcloud.com/claytonaudio/mti-test2
soundcloud.com/claytonaudio/mti-auto-orchestra
And here's a link to the Manual - model AO1 but it has almost all of the same features.
The volume pedal has a block attached to the end so that the default is max volume. And it does not turn the volume all the way off when tilted back to minimum - but the pedal has a stop / start switch for the end - with a fade. -- The pedal also offers 7th, Minor and Minor 7th chord buttons for each note. Listen for those notes at the end of the first sample.