However, its strings are played by tapping with the fingers, similar to the tapping technique used by some electric guitarists (such as Stanley Jordan). And the layout of the fretboard makes it very convenient to play scales and find intervals.
As Marcodi Musical Products states “Developed in 2001 by Tim Meeks, the harpejji was created to bridge the gap between the piano and the guitar. Inspired by the StarrBoard and Chapman Stick®, Tim set out to create an instrument that had characteristics of a guitar but was intuitive for keyboardists.”
Musicians can use it to play complex chords and melodies with both hands, mixing the logic of a keyboard with the sound of a stringed instrument. If you’re a fan of Stevie Wonder, Jacob Collier, or Cory Henry, you may have seen them play it on stage or in videos. But since 2019, it’s also been performed on by the Estonian Song Festival’s most recent director of men’s choirs, musician Valter Soosalu.
Take a look at the Marcodi's recent artist spotlight of Soosalu and their discussion of the instrument: