How is the harmonica used in blues music?

The harmonica, often referred to as the "blues harp," is a key instrument in Blues Music, providing expressive melodies and emotional depth. It typically complements guitar and vocals, adding a raw, soulful quality that enhances the genre's themes of struggle and heartache. Players use techniques like bending notes and overblowing to create a distinctive sound that captures the essence of blues. Its portability and versatility make it an ideal instrument for both solo performances and ensemble settings.