Moog • Taurus I

Inspired by organ pedal boards, Moog released the Taurus Pedal Synthesizer - a monophonic analog bass synthesizer you play with your feet (so you can play other instruments with your hands). It has three Preset sound patches and one User programmable preset. The three preset sounds are Bass, Tuba and Taurus. Most users prefer the User preset which lets them create their own sounds from its simple VCO, VCF and VCA controls.
A section called VARIABLES contains the sliders for its VCO, VCF and VCA sections which will only work when the User preset is selected. It features a simple 2-oscillator design that can be tuned across a 5-octave range. An Octave button lets you shift the pedal keyboard up or down an octave. The oscillators can be slightly detuned. There's also a Glide (portamento) effect and a 24dB/oct lowpass filter with simple controls like Emphasis, Contour Amount/Attack/Decay and Cut-Off. A simple VCA with attack, sustain, decay and loudness controls. Two gigantic foot-sliders flank the sides of the Taurus and they are used to adjust the Filter cut-off and VCA Loudness on the fly using your feet. It has been used by Rush, Yes, Genesis, U2 and the Police.
Two proto Apollos were known to be produced; one of these was used by Keith Emerson on the Emerson, Lake & Palmer 1973 Brain Salad Surgery album.