English composer John Dunstable (also spelled Dunstaple) was a major transitional figure between the medieval and Renaissance and the main proponent of what the French called the Contenance Angloise. Almost none of his music survives in England; however, copies are widespread throughout Continental Europe, circulating as far as Russia.

Dunstable's name suggests he may have been born in the town of Dunstable in Bedfordshire, England. Sources from his time, including a possible signature of his own, spell his name "Dunstaple." The birthdate of 1390 is surmised from the appearance of his earliest known datable works, the motets Veni sancte spiritus and Preco preheminencie, heard during the celebrations that followed in the wake of English King Henry V's victories in the Battle of Agincourt. These pieces were repeated at Canterbury Cathedral for the King and the Holy Roman Emperor Sigismund in 1416. This could suggest Canterbury composer Leonel Power, author of the Old Hall Manuscript, knew Dunstable, and Power may have been Dunstable's teacher. The work of Dunstable and Power is so similar that several contemporary manuscript copies bear attributions to both composers for the same pieces.

Dunstable disappears from the historical record until 1427, when it is established that he was then in France in the service of Henry V's younger brother John of Lancaster, Duke of Bedford. He is also shown to be in the retinue of the notorious dowager Queen, Joan of Navarre, from 1428. The historical record relating to Dunstable's service to the Plantagenets is unclear, but this may mean that he traveled quite frequently between England and France, in service of both courts. During his travels abroad, Dunstable may have become acquainted with his greatest admirers, the Franco-Flemish composers Guillaume Dufay and Gilles Binchois. Fifteenth century treatises acknowledge the impact made by English music on French musicians during this period. This reflects the concurrent political situation as well, as much of the territory of France, including Paris itself, lay in English hands from 1420 to 1450, the final phase of the Hundred Years' War. Dunstable benefited directly from this situation when the Duke of Bedford died in 1435, as Bedford awarded to Dunstable generous land grants in Normandy. Queen Joan remembered him with a handsome annuity at her death in 1437.

Dunstable was also an astronomer of considerable acclaim in his day, and astronomical charts believed to be in his own hand yet survive. However, his music is only known in copies made by other scribes, mostly preserved in sources located in Italy and Germany, rather than England, where just a scant remainder of contemporary examples remains. Only a tiny fraction of Dunstable's work is of the secular variety, and of these the most widely circulated piece, O Rosa bella, is now known to be the work of Dunstable's younger contemporary John Bedyngham. Although Dunstable's musical output was primarily sacred, there is no evidence to suggest that he held any post as a cleric. When Dunstable died in 1453, he was both wealthy and famous, and his reputation as a composer survived well into the first part of the 16th century. Another presumed associate of Dunstable's, John of Wheathampstead, abbot of Saint Albans, composed two epitaphs to Dunstable's memory, one of which reads "with (Dunstable) as judge, Urania learned how to unfold the secrets of Heaven. This man was your glory, O Music; who had dispersed your sweet art through the world. The 'star' transmigrates to the stars; may the citizens of Heaven receive him as one of their own." ~ Uncle Dave Lewis, Rovi