Stanley Jordan's unique two-handed tapping technique is simply amazing. Here's a example of it, and below is a description.

"Normally, a guitarist must use two hands to play each note. One hand presses down a guitar string behind a chosen fret to prepare the note, and the other hand either plucks or strums the string to play that note. Jordan's touch technique is an advanced form of two-handed tapping. The guitarist produces a note using only one finger by quickly tapping (or hammering) his finger down behind the appropriate fret. The force of impact causes the string to vibrate enough to immediately sound the note, and Jordan executes tapping with both hands, and with more legato than is normally associated with guitar tapping. The note's volume can be controlled by varying the force of impact: tapping with greater force produces a louder note.

A helpful analogy to visualize this technique is the distinction between a harpsichord and a piano. A harpsichord produces sound by plucking its strings, and a piano produces sound by striking its strings with tiny hammers. However, while notes produced on a harpsichord or piano sustain after the pick has plucked or hammer has struck, fingers must remain on a tapped note for the sound to continue. This similarity is what led Jordan to attempt such a technique in the first place;[citation needed] he was a classically trained pianist before playing guitar and wanted greater freedom in voicing chords on his guitar.

Jordan's two-handed tapping allows the guitarist to play melody and chords simultaneously. It is also possible, as Jordan has demonstrated, to play simultaneously on two different guitars, as well as guitar and piano. Another feature of Jordan's playing is the tuning he uses: from bass to treble EADGCF (all in fourths as on the Chapman Stick, compared with the standard EADGBE), so the patterns for chords are the same wherever they are played on the fretboard.

Stanley Jordan's main guitar was built by Vigier Guitars in 1988: it is an Arpege model on which Vigier made a flat fingerboard, allowing it to have a very low action (0.5/0.7mm). The low action facilitates the tapping technique."

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