An "Augmented Interval" in music theory refers to a specific type of interval that is one half step larger than a perfect or major interval. For example, if you take a major third interval, which consists of four half steps, an augmented third would consist of five half steps. This alteration creates a unique sound that can add tension or brightness to musical compositions. Augmented intervals can be found in various musical contexts, including chords, scales, and melodies. They are often used in genres like jazz and classical music to create interesting harmonic progressions. Understanding augmented intervals can enhance a musician's ability to compose and improvise effectively.