Falsetto is a vocal technique that allows singers to reach higher pitches than their normal singing voice. It involves the use of the vocal cords in a way that creates a lighter, airier sound. This technique is often used in various music genres, including pop, classical, and R&B, to add emotional depth or to create a distinct vocal style. Singers like Frankie Valli and Prince are well-known for their use of falsetto, showcasing its expressive potential. While falsetto can be a powerful tool for artists, it requires practice to master, as it differs from the chest voice, which is used for lower pitches.