neirocca sound-first music theory
Analyze & Understand

Analyze & Understand

From key detection to chord reverse lookup, progression analysis, and transposition. Turn what you hear into practical theory you can apply.

Learning path

  1. 1

    Key Finder

    ⭐ Start here

    Estimate tonal center with Key Finder

  2. 2

    Chord Finder

    Convert heard note stacks into names with Chord Finder

  3. 3

    Chord Progression Analyzer

    Check function and non-diatonic chords in Chord Analyzer

  4. 4

    Transpose Tool

    Transpose the result into practical keys with Transpose Tool

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