Pitch Trail follows Eguchi's Chord Identification method: listen, choose the matching color, and add new chords gradually. See also the Ichionkai Perfect Pitch Program.

1. Meet the colors.Use the music-note explorer to tap red and yellow and learn their sounds.
2. Keep it tiny.Short trails continuously revisit the sounds that need more practice.
3. Grow automatically.Strong recent trails add one new color, with no calendar wait.

Designed for children aged 2–6. Pitch Trail is adapted from the open-source BSharp trainer and CIM Trainer. It is educational practice software, not a medical or developmental guarantee.