Jan Cardell is a Swedish artist who makes mechanically functional sculptures that play music. His "rytmobiles" are made from an assortment of materials, including steel, iron, papier-mâché, rubber, and glass, and they perform musical compositions using a time-coded flow of information and computer-controlled devices . The process for executing a song begins when Cardell loads the composition's musical information onto a series of microcomputers via a unique program he wrote himself. Sound is created when the microcomputers trigger electric spools that move the sculpture's arms. The arms move and strike different forms, creating a range of sounds. The music on Rytmobile, Cardell's first recording using this process, is composed by Lena J:son Sanner, and a second album of Cardell's own compositions is forthcoming.