A "Jam Band" is a type of musical group known for its improvisational style, where musicians often extend songs with spontaneous solos and extended instrumental sections. These bands typically blend various genres, including rock, jazz, and blues, creating a unique sound that evolves during live performances. Fans of jam bands enjoy the unpredictability of each show, as no two performances are ever the same. One of the most famous jam bands is the Grateful Dead, whose concerts became legendary for their long, free-form jams and devoted fan base. Other notable jam bands include Phish and Widespread Panic, each contributing to the vibrant culture of live music and community that surrounds this genre.