Diminished and Augmented intervals are two essential but often misunderstood interval types. Building on Major, minor, and Perfect intervals, this video explains how these altered intervals are formed by decreasing or increasing half steps. Through visual examples and staff-based demonstrations, viewers learn how to identify and count these more advanced interval structures.

Examples such as diminished fifths and augmented seconds help illustrate how chromatic alterations affect harmonic function and musical color. Understanding these intervals is key for advanced ear training, chord construction, and music analysis.