Talkback offers a fortified musical experience. Three synth voices change notes when triggered by user sounds (via an internal microphone).  With a clap, snap, vocal sound or just by tapping on the enclosure, you cycle through quasi-randomised notes. The instrument is entirely tuned to C Major. The lead synth voice randomly cycles through two octaves worth of notes, while the mid and bass synths have a more refined set of notes in order to keep relative harmony.