Bass Chords for the Blues

Twelve roots, 54 qualities. Choose a root, then a quality, for the shapes and what this seat does with them.

The chord reference for this seat. Choose a root, then any of 54 qualities, for the shapes and for what this seat does with the chord while a bar of the blues goes by.

The bass carries a repeating figure under every bar that moves with each change of chord and tells the rest of the band the change has arrived. It seldom sounds the whole chord: it picks which tones to step through and in what order, and the band hears the harmony from whatever note it lands on at the top of the bar.

Drawn for EADG across 4 strings: the open grips lead, the movable ones follow up the neck, and a play button under each lets you check it by ear.