Chord Progression Library
Pick a progression and a key - chords are computed from the major scale (roots and chord qualities derived, not typed per key). Progressions themselves are building blocks anyone may use; we name no lyrics and copy no song charts.
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Hear it: play one bar per chord with the metronome, and check any unfamiliar shape in the chord finder / chord library.
I - V - vi - IV
The four-chord pop loop behind countless hits. Naming famous examples generically: it underpins a huge share of modern pop and rock - learn it once, unlock hundreds of songs by ear.
I - vi - IV - V
The 50s doo-wop loop - gentle, romantic, endlessly recyclable.
vi - IV - I - V
Same four chords starting on vi - the emotional, anthemic rotation.
ii - V - I
The core jazz cadence. Extend it: ii7 - V7 - Imaj7.
12-bar blues (I7-IV7-V7)
One chord family, twelve bars, a century of blues, rock and roll and country.
Songs that use these: described generically on purpose. The I-V-vi-IV family, for example, is commonly cited as the backbone of modern four-chord pop; the ii-V-I closes countless jazz standards; the 12-bar blues structures most classic blues. Learn the shapes, then learn specific copyrighted songs from licensed sources below.