The instrument
The Instapiano 73 with a 73-key keyboard followed the extremely basic Instapiano from 1973.
Details
The GEM Insta Piano 73 features a 73-note touch-sensitive keyboard and presets that include piano, electric piano, funky piano and harpsichord. The Voltage Controlled Filter (VCF), which can be automatically turned off by the SEC, makes a large number of special effects possible. Other features include tone, resonance, attack and volume controls, chorus and phaser animation, speed and depth controls on VCF modulation, built-in amplifier and speakers, and soft pedal and sostenuto pedal to control the VCF. (Source: muzines)