Guitar Permutation Trainer vs Cantus

Guitar Permutation Trainer helps you practice finger permutations across your fretboard with a built‑in metronome and adaptive difficulty. Practicing permutation exercises on instruments like guitar, bass, and piano targets the small, intrinsic muscles of the hand and fingers, such as the lumbricals and interossei. These muscles are responsible for fine motor control, finger independence, and strength. Repetitive, structured movement patterns improve neuromuscular coordination by reinforcing neural pathways between the brain and fingers - a process known as motor learning. According to research in kinesiology and occupational therapy, consistent practice builds endurance and prevents overuse injuries by promoting balanced muscle development. For developing musicians, this foundation is essential for achieving speed, accuracy, and long-term technical reliability without strain.

Cantus - Voicing Lab is an interactive harmony and chord-voicing tool by Nathaniel School of Music for pianists, composers, producers, and music theory students. Explore how notes move inside chords, hear voicings in context, and study color, tension, and modal relationships from the keyboard. Cantus is designed as a focused practice lab: pick a sound, inspect the voice leading, and build intuition for how harmony feels under your hands. FEATURES * Interactive chord and voicing explorer * Piano keyboard visualization * Modal and scale-based harmony practice * Voice-leading movement and pinboard-style comparison * Tone.js audio playback * Self-hosted fonts and bundled web assets * Works without an account BY NATHANIEL SCHOOL OF MUSIC Built for practical harmony learning, composition practice, and deeper chord fluency.