A great tool for producers, live performers, or people who just like to eff around with their voice, Roland‘s VP-7 Vocal Processor (MSRP: $639) stands as one of the most intuitive and multi-faceted vocal-effects pedals currently available. Run a MIDI cable from any of your synths into this box, plug in a microphone, and create any number of vocal harmonies yourself, or use the available voice types Female Choir, Boys Choir, Gregorian Choir, and Jazz Scat to have the box sing for you. The remaining options allow for continual manipulation of the created sounds, and a classic-sounding vocoder thrown into the mix definitely doesn’t hurt the VP-7’s appeal.