Rotary Connection Rotary Connection Rotary Connection was an American psychedelic soul band, formed in Chicago in 1966. In addition to their own recordings, Rotary Connection is notable as the backing band for Muddy Waters on his psychedelic blues album "Electric Mud". The band's members included Minnie Riperton, who would emerge as a notable solo artist. The highly experimental band was the idea of Marshall Chess, son of Chess Records founder Leonard Chess. Marshall was the director behind a start-up label, Cadet Concept Records, and wanted to focus on music outside of the blues and rock genres, which had made the Chess label
Rotary system Rotary system The rotary machine switching system, or most commonly known as the rotary system, was a type of automatic telephone exchange manufactured and used primarily in Europe from the 1910s. Formally named the No. 7-A Machine Switching System, it was developed in Belgium by International Western Electric, a subsidiary of American Telephone and Telegraph (AT&T), at the same time when AT&T's American engineering division, Western Electric, was developing the Panel switch in the United States. The Rotary and Panel systems were very different systems, but both used the same newly developed component technology, such as Western Electric's latest relays,