This paper describes a series of investigations into the use of sustainable methods for powering electronic musical instruments and perhaps ultimately a large ensemble such as the Princeton Laptop Orchestra, a collection of 15–25 meta-instruments each consisting of a laptop computer, interfacing equipment and a hemispherical speaker. The research discussed includes the development of instruments specifically designed for solar power, as well as the use of solar panels and/or batteries to power more conventional devices such as computers and amplifiers.

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