Touch Tonnetz vs Melodician

Touch Tonnetz visualizes Neo-Riemannian music theory through the Tonnetz (tonal network) lattice. Tap any chord or note to hear it, see its Neo-Riemannian transformations, and explore harmonic relationships that go beyond traditional tonal progressions. Key Features: Interactive Tonnetz Visualization — Tap any chord or note to hear it and see its Neo-Riemannian transformations highlighted on the lattice Harmonic Analysis — Roman numeral overlays for any tonic, updated in real time Progression Builder — Create, save, and play back melodic progressions Custom Chords — Build and save your own chords for experimentation Three Instrument Sets — Piano, Brass, and Woodwinds, all high-quality samples Six Color Schemes — Three dark, three light Pinch to Zoom — Explore the lattice in detail at up to 4× magnification 7-Day Free Trial — Full access, no restrictions, no nags Perfect For: Composers looking for harmonic paths outside conventional progressions Music theorists studying Neo-Riemannian transformations Musicians experimenting with chord voice-leading Students exploring music theory hands-on What is Neo-Riemannian Theory? Neo-Riemannian theory is a branch of music theory that studies relationships between major and minor triads using transformational geometry. Rather than treating chords as functions within a key (tonic, dominant, etc.), it focuses on the small voice-leading moves — Parallel, Leading-tone exchange, and Relative — that connect one triad to the next. The result is a rich map of chromatic harmony that complements traditional tonal analysis. Why Touch Tonnetz? The Tonnetz lattice makes these relationships spatial: related chords are neighbors, and transformations are visible paths. Touch Tonnetz lets you see the lattice, hear it, and build with it — turning an abstract theoretical framework into something you can explore by ear and by hand.

For everyone who plays an instrument. Turn your sheet music into an instrument. Tap notes directly to perform. Enjoy rhythm practice, sight-reading, ear training, and simple song ideas with ease. • Play single notes and chords, with # / b by tapping the left or right edges • Tap length roughly changes note duration • Transpose • Metronome • Recording & Playback • Add takes to layer your performance • Change the key and tempo during playback • Performance data syncs with the companion app “Kalimbar” • Effects • Zoom in and out of the score • Zooming out enables a wider playable note range. 【FAQ】 Q. I’m concerned about the response time (latency) between tapping and hearing the sound. A. We recommend using the device’s built-in speaker or a wired connection (earphones/headphones via USB-C/Lightning). Note: Bluetooth (wireless) audio is more likely to introduce delay by design. Q. When I use 3-finger (or more) multitouch, the sound or behavior becomes unstable. A. If Settings > Accessibility > Zoom is ON, iOS/iPadOS prioritizes its built-in three-finger gestures, which can interfere with this app’s controls. If needed, please temporarily turn Zoom OFF.