Two-part harmonies that follow your guitar, in a one-knob stompbox. Harmony Singer plugs into your vocal mic and your guitar, listens for the chords you’re playing, and sings along on key — instantly turning a solo singer-songwriter into a duo.

One footswitch, one Voicing knob to choose the harmony interval, one Tone control to shape the blend. A studio-quality reverb is baked in so your dry mic suddenly fits the song without a second pedal. XLR in and out with phantom power for your favourite condenser, 1/4-inch guitar input that doesn’t colour your tone on the way to the amp — and a 1/4-inch guitar pass-through so the signal still arrives at your amp the way you set it up.

Open mics, small rooms, busking pitches, looper-based rigs, the second chorus that always wanted a second voice: Harmony Singer is the smallest unfair advantage a solo performer can carry. Plug in, set the voicing, step on it, and the second half of your duo just walked on stage with you.