Harpejji

The harpejji ( har-PEJ-ee) is an electric 12-to-24-stringed musical instrument developed in 2007 by American audio engineer Tim Meeks. It has been described by its manufacturer as a cross between a piano and a guitar, and by Jacob Collier as a cross between an accordion and a pedal steel guitar. The playing surface has a layout arranged in ascending whole tones across strings, and ascending semi-tones as the strings travel away from the player, with the 24-string models featuring a five-octave range from A0 to A5, and the 22-stringed M5 also offering a 5 octave range from C1 to C6. Harpejjis use an electronic muting system to dampen unfretted strings and minimize the impact of sympathetic vibrations.

About 500 harpejjis had been made as of 2019.