Watch Cineb. MUSICALLY MAD takes you into the hearts and heads of the singers and soundmen, the backbone of the UK roots reggae sound systems. With them they bring the deepest bass and the highest chants, delivered by massive stacks of speakers and custom-built sound equipment. For some, attending a sound system dance is a religious experience, channelled through the music and the message. For others it`s the natural way to connect with the music they love. Either way, sound system culture is growing and changing.