In music, "harmonic" refers to the combination of different pitches played or sung simultaneously to create a pleasing sound. This concept is fundamental in creating chords, which are groups of notes that harmonize together. Harmonics can enhance melodies and add depth to musical compositions, making them more engaging. Harmonic structures are often analyzed in terms of their intervals, which are the distances between notes. The study of harmony is essential in various musical genres, including classical, jazz, and pop. Composers like Johann Sebastian Bach and Ludwig van Beethoven are known for their innovative use of harmonic techniques in their works.