Reference

Learn intervals, chords and progressions

Everything the game asks you to hear, one page each. Every example plays right in your browser.

Intervals

• Minor second1 half step · C to D♭
• Major second2 half steps · C to D
• Minor third3 half steps · C to E♭
• Major third4 half steps · C to E
• Perfect fourth5 half steps · C to F
• Tritone6 half steps · C to F♯
• Perfect fifth7 half steps · C to G
• Minor sixth8 half steps · C to A♭
• Major sixth9 half steps · C to A
• Minor seventh10 half steps · C to B♭
• Major seventh11 half steps · C to B
• Octave12 half steps · C to C

Chords

• Major chordC · 1 3 5
• Minor chordCm · 1 ♭3 5
• Diminished chordCdim · 1 ♭3 ♭5
• Augmented chordCaug · 1 3 ♯5
• Major seventh chordCmaj7 · 1 3 5 7
• Dominant seventh chordC7 · 1 3 5 ♭7
• Minor seventh chordCm7 · 1 ♭3 5 ♭7
• Half-diminished chordCm7♭5 · 1 ♭3 ♭5 ♭7

Progressions

• I–IV–V–IThree-chord rock and blues · C F G C
• I–V–vi–IVThe four-chord pop song · C G Am F
• I–vi–IV–VFifties doo-wop · C Am F G
• I–♭VII–IV–IClassic rock, with the borrowed ♭VII · C B♭ F C