Tim Langley of Santa Clara plays through the Vocalist Live Harmony by DigiTech. The Live Harmony is a live performance intelligent vocal harmony processor. You can add up to two additional voices of harmony, from an octave above to an octave below with the Live Harmony. Along with the harmony interval you can set the level and gender of each voice independently. The Live Harmony is very easy to use. It automatically reads your guitar chords to generate harmonies in the correct key. You don't have to program the Live Harmony to follow your key changes. The Live Harmony automatically detects key changes to ensure your vocal harmonies are spot on every time you perform. You can learn more about the Live Harmony at digitech.com