Philip Rosseter (1568 – 5 May 1623) was an English composer and musician, as well as a theatrical manager. His family seems to have been from Somerset or Lincolnshire, he may have been employed with the Countess of Sussex by 1596, and he was living in London by 1598. In 1604 Rosseter was appointed a court lutenist for James I of England, a position he held until his death in 1623. Rosseter is best known for A Book of Ayres which was written with Thomas Campion and published in 1601. Some literary critics have held that Campion wrote the poems for Rosseter's songs; however, this seems not to be the case. It is likely that Campion was the author of the book's preface, which criticizes complex counterpoint and "intricate" harmonies that leave the words inaudible. The two men had a close profe