12-Bar Blues Builder 🎸

The blues is built from three chords: I (A7), IV (D7) and V (E7). Tap a bar to change its chord, then press play. Can you build the classic 12-bar pattern by ear?

The classic: four bars of I, two of IV, back to I, then V–IV–I and a V to turn it around. Every blues song you heard this term walks this exact road.