Abstract: The disclosure provides a system for music visualization and a loudspeaker system including the system for music visualization. The system may comprises: a passive radiator configured to be movable in a direction of excursion while music is being played; a plurality of lenses operably attached to the passive radiator and configured to move together with the passive radiator; and a plurality of light sources disposed relative to the plurality of lenses so that the light emitted from the plurality of light sources passes through the plurality of lenses and is projected on an environment surface to form at least one projected area.