What is an Eleventh Chord?

An eleventh chord is an extended chord that adds an eleventh interval on top of a seventh or ninth chord. It typically contains several stacked notes built in thirds: the root, third, fifth, seventh, ninth, and eleventh. The eleventh is the same pitch as the fourth note of the scale, but played an octave higher. For example, a C11 chord may include the notes C, E, G, B♭, D, and F.

The addition of the eleventh creates a fuller and more complex harmonic sound compared to simpler chords. Because the eleventh can sometimes clash with the third of the chord, musicians often adjust the chord voicing or omit certain notes when playing it. These adjustments help keep the harmony balanced while still maintaining the chord’s rich color.

Eleventh chords are commonly used in jazz, funk, gospel, and contemporary music. They are often used to add depth and texture to chord progressions and arrangements. Because of their layered harmonic structure, eleventh chords can create a spacious and sophisticated sound in musical compositions.