These chord progressions are great for jamming, playing with friends, or finding ideas for songs you want to write.

The key to understanding chord progressions is the number system. Knowing how chords are built from scales — and how to identify whether a progression is major or minor — opens up the entire fretboard. Once you hear a progression in terms of numbers (I, IV, V), you can play it in any key instantly.

The lessons below cover common chord progressions, how to use them, and how to start building your own.