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Chord Progressions

Harmonic cadences and chord progressions explained: every roman-numeral degree documented, and every progression playable chord by chord — the same theory engine behind the GuessTheChords trainer.

Roman-numeral degrees

Tap any symbol to read what it means and hear it inside a real progression.

All progressions & cadences

Essential 22

I-IV-V-I Perfect Authentic Cadence major I-V-vi-IV Pop Axis Progression major I-vi-IV-V '50s Doo-Wop Progression major I-IV-I-V Passamezzo Moderno major I-IV-V-IV major I-V-IV-V major I-IV-vi-V major I-V-IV-I Rock Plagal Turnback major I-iii-vi-IV major vi-IV-V-I Minor-Start Authentic Cadence major IV-I-V-vi major I-IV-vi-IV major i-bVI-bIII-bVII minor i-bVII-bVI-V Andalusian Cadence (Lament) minor i-iv-bVII-bIII minor i-iv-V-i Minor Authentic Cadence minor i-IV-i-IV Dorian Vamp minor i-bVII-bVI-bVII minor I-II-I-II Lydian Vamp major i-bII-i-bII Phrygian Vamp minor I-Vsus-V-IV major I-IVsus-IV-V major

Intermediate 28

ii-V-I-vi ii–V–I Jazz Turnaround major I-vi-ii-V Rhythm Changes Turnaround major ii-V-I-IV major iii-vi-ii-V Extended ii–V–I Turnaround major I-IV-ii-V major I-V-vi-iii major vi-IV-I-V major I-iii-IV-V major I-vi-IV-ii major i-iio-V-i Minor ii°–V–i Cadence minor i-bVI-V-i Minor-Sixth Turnback minor i-bVI-bVII-i Aeolian Cadence minor ii-Vsus-V-I major I-Isus-IV-V major I-iisus-ii-V major I-I+-IV-V major I-V+-vi-IV major I-VI7-ii-V Secondary Dominant (V of ii) major I-III7-vi-IV Secondary Dominant (V of vi) major I-II7-V-I Secondary Dominant (V of V) major iii-VI7-ii-V Extended Secondary-Dominant Turnaround major I-I7-IV-I Gospel Quick-Change major I-IV-iv-I Minor Plagal Cadence major I-vi-IV-iv The Borrowed iv (Modal Mixture) major I7-IV7-I7-V 12-Bar Blues Skeleton major I7-IV7-V-I7 Blues Shuffle Turnaround major vi-II7-V-I Relative-Minor Secondary Dominant (V of V) major I-III7-vi-V Tonicized-vi Turnaround major

Advanced 29

ii-V-I-IV7 major I-IV-V-iii major vi-ii-V-I Extended ii–V–I (with vi) major I-vi-ii-bII7 Tritone Substitution Turnaround major I-bVII-IV-I Mixolydian Vamp major I-bVII-bVI-V Descending Major Tetrachord major I-bIII-bVII-IV major i-bVI-bIII-V minor i-viio-bVII-bVI minor i-iv-bVI-V minor I-IVsus-Vsus-I major i-ivsus-Vsus-i minor I-I+-IV-vi major i-bIII+-bVI-V minor I-III+-vi-V major I-#ivo-V-I major I-#io-ii-V major ii-#iio-iii-vi major i-viio7-bVII-bVI minor I-VI7-II7-V Ragtime Circle of Fifths major iii-VI7-II7-V Extended Ragtime Turnaround major I-VI-II-V Barbershop Turnaround major I-III-vi-IV major I-bVI-bVII-I Epic Borrowed Cadence major I-iv-bVII7-I Backdoor Cadence major iv-bII-V-i Neapolitan Cadence minor i-bVI-bII-V minor I-bIII7-bVI-VII7 Coltrane 'Giant Steps' Cell major I-III-bVI-I Coltrane Changes (Bare Cycle) major