A method for transmitting data in a multiple-input-multiple-output space-time coded communication using a mapping table mapping a plurality of symbols defining the communication to respective antennae from amongst a plurality of transmission antennae and to at least one other transmission resource. A sensor system detects the location of one or more fingers or objects at selected locations on a playing surface of the instrument, and the detected locations are combined with information indicative of one or more strings being played to generate a digital signal containing information as to the notes being played. Also included is a regenerative solid oxide fuel cellelectrolyzer with steam turbine cogeneration.