This paper presents a new circular tangible interface where one or multiple users can collaborate and interact in real time by placing and moving passive wooden pucks on a transparent tabletop in order to create music. The design encourages physical intuition and visual feedback on the music being created. An arm with six optical sensors rotates beneath a transparent surface, triggering sounds based on the objects placed above. The interface's simplicity and tangibility make it easy to learn and suitable for a broad range of users.