an English musician and composer, particularly associated with music for the viola da gamba. Simpson wrote a short guide to musical composition in 1665: The Principles of Practical Musick (dedicated to Sir John St. Barbe, another of his pupils) and expanded this into his 1667 publication A Compendium of Practical Musick. Very few of Simpson's musical compositions appeared in print during his lifetime, except those included as examples in his books. Some of his compositions survive in manuscript form.
