TC Electronic Voicetone Harmony-G XT Vocal Pedal and TC MP75 Mic, Cable Bundle Improved NaturalPlay guitar-controlled harmony algorithm Front-of-house quality reverb algorithm and selection of styles from VoiceLive 2 Selection of four overdub-style doubling effects with two more doubling voices available Easy manual selection of Scale & Key for singers without an instrument or horn players Guitar signal can be mixed in and share reverb or passed through to separate amplifier