The first online chat service was developed by a CompuServe executive, Alexander Trevor, and released by CompuServe in 1980 under the name "CompuServe CB Simulator." At that time, most people were familiar with CB radio, but multi-user chat and instant messaging didn't exist. CompuServe CB used the CB radio paradyme to help users understand the new concept. Like CB radio it had 40 "channels" and commands like "tune", "squelch", and "monitor." CompuServe CB quickly became the largest single product on CompuServe despite virtually no marketing. When 40 channels wasn't enough, additional "bands" were added, such as the "Adult" band. The first online wedding occurred on CompuServe CB, and worldwide fans organized events to meet in the "real world" people they had met in CB. Later, enhancements to CompuServe CB were made to enable multiplayer games, digital pictures, multimedia, and large conferences. For example, Mick Jagger of the Rolling Stones held the first online multimedia conference using CompuServe CB from London on December 7, 1995.