A 1503 apprenticeship indenture from the Harleian Manuscripts, documenting an agreement between William Park (master) and John Darse (apprentice) for a 6-year term of service in music instruction and teaching. The document specifies Park's obligations to teach singing, prickle-song, organ-playing, and manners, and Darse's duties of obedience and service. The Abbot of Rushen and other parties serve as sureties. This is a rare example of early Manx institutional and social documentation, providing context for pre-Revestment Isle of Man society and church administration.