Chordal sevenths are four-note chords that include a root, third, fifth, and seventh. They add tension and color to a chord progression.
Dominant Seventh: A dominant seventh chord is a type of chordal seventh that includes a major triad with an added minor seventh. It has a strong pull towards resolving to the tonic.
Major Seventh: A major seventh chord is another type of chordal seventh that includes a major triad with an added major seventh. It has a smooth and dreamy sound.
Minor Seventh: A minor seventh chord is yet another type of chordal seventh that includes a minor triad with an added minor seventh. It has a slightly melancholic feel.