Music Theory Practice - Free Online Tool
Theory Mastery is a free, interactive music theory practice application designed for musicians, music students, and teachers. Practice building scales, learn chord inversions, master key signatures, and understand musical modes.
Features
- Scale Builder - Practice building major scales, minor scales, pentatonic scales, blues scales, harmonic minor, melodic minor, and all seven modes (Ionian, Dorian, Phrygian, Lydian, Mixolydian, Aeolian, Locrian)
- Chord Inversions - Learn root position, first inversion, second inversion, and third inversion for major, minor, diminished, major 7th, minor 7th, dominant 7th, and other chord types
- Sharp/Flat Count - Master key signatures by practicing how many sharps or flats are in each scale
- Theory Overview - Reference guide with Circle of Fifths and modes chart
- Scales Dictionary - Look up any scale in any key
- Chords Dictionary - Look up any chord with all inversions
Supported Scales
Major scales, natural minor scales (Aeolian), harmonic minor, melodic minor, pentatonic major, pentatonic minor, blues scale, and all church modes including Ionian, Dorian, Phrygian, Lydian, Mixolydian, Aeolian, and Locrian.
Supported Keys
All major and minor keys including C, G, D, A, E, B, F♯, C♯, F, B♭, E♭, A♭, D♭, G♭, and C♭.
Available Languages
English, Deutsch (German), Nederlands (Dutch), 中文 (Chinese), Français (French), Italiano (Italian), Español (Spanish)
