Gareth Loy is an American author, composer, musician and mathematician. Loy is the author of the two volume series about the intersection of music and mathematics titled Musimathics. Loy was an early practitioner of music synthesis at Stanford, and wrote the first software compiler for the Systems Concepts Digital Synthesizer (Samson Box). More recently, Loy has published the freeware music programming language Musimat, designed specifically for subjects covered in Musimathics, available as a free download. Although Musimathics was first published in 2006 and 2007, the series continues to evolve with updates by the author and publishers. The texts are being used in numerous math and music classes at both the graduate and undergraduate level, with more current reviews noting that the originally targeted academic distribution is now reaching a much wider audience. Music synthesis pioneer Max Mathews stated that Loy's books are a "guided tour-de-force of the mathematics of physics and music... Loy has always been a brilliantly clear writer. In Musimathics, he is also an encyclopedic writer. He covers everything needed to understand existing music and musical instruments, or to create new music or new instruments. Loy's book and John R. Pierce's famous The Science of Musical Sound belong on everyone's bookshelf, and the rest of the shelf can be empty." John Chowning states, in regard to Nekyia and the Samson Box, "After completing the (Samson Box) software, Loy composed Nekyia, a beautiful and powerful composition in four channels that fully exploited the capabilities of the Samson Box. As an integral part of the (original Stanford) community, Loy has paid back many times over all that he learned, by conceiving the (Samson) system with maximal generality such that it could be used for research projects in psychoacoustics as well as for hundreds of compositions by a host of composers having diverse compositional strategies."