Harpejji, a truly amazing string instrument

http://www.marcodi.com/

The harpejji is a member of a small family of stringed musical instruments known as tapping instruments. Tapping instruments are descendents of the electric guitar but are optimized for a style of playing that involves tapping on the strings to produce a note. One of the primary benefits of this style of playing is that it only requires one finger to make each note, unlike strumming which requires at least one finger on each hand to make a note.