BOSS VE-2 Vocal Harmonist The BOSS VE-2 Vocal Harmonist automatically adds harmonies to your vocals based on the key you play on your guitar. It's a compact and versatile vocal effects unit that's easy to carry around. It offers a variety of harmonies, from unison to a third above, an octave, and even two-voice harmonies. Shipping to locations outside of Honshu will be at the buyer's expense. Please inquire in this case.