The 7b5 chord, also known as the Dominant 7 flat 5 chord, is a unique variation of the dominant seventh chord. This particular chord carries a tension-laden sound, often employed to create a sense of unease or anticipation in music. It features a flattened fifth degree added to the usual dominant seventh chord structure, resulting in the following interval pattern: root, major third, diminished fifth, and minor seventh. This altered chord is typically used in jazz, blues, and experimental genres, acting as a passing chord or adding unexpected harmonic twists. Adding a 7b5 chord to your playing can effectively heighten musical tension or resolve it creatively.