John Bull (1562 or 1563 – 15 March 1628) was an English composer, musician and organ builder. He was a renowned keyboard performer of the virginalist school and most of his compositions were written for this medium.
Bull's place of birth is shrouded in uncertainty. In an article published in 1952, Thurston Dart presumed that Bull's family originated in Somerset, where it is possible the composer was born. It was the 17th century antiquarian Anthony Wood who first proposed that he was related to the Bull family of Peglich, Somerset, but in 1959 Dart wrote that Bull was probably the son of a London goldsmith…. Then, in the second edition of his Calendar of the Life of John Bull, Dart proposed Hereford as a third possibility. More recent research by Susi Jeans suggests that Bull was born in the Radnorshire parish of Old Radnor within the diocese of Hereford, although no birth records have yet been discovered. Bull's appointment as organist of Hereford Cathedral in 1582 lends credence to this diocese being his place of birth: it was customary at this time for organists to return to their home cathedrals after training in London (cf: Thomas Morley).
In 1573 he joined the choir at Hereford Cathedral, and the next year joined the Children of the Chapel Royal in London, where he studied with John Blitheman and William Hunnis; in addition to singing he learned to play the organ at this time. After being appointed to the Merchant Taylor's Company in 1577–78, Bull received his first appointment as organist of Hereford Cathedral in 1582, and then became Master of the Children there.
In 1586 he received his degree from Oxford, and he became a Gentleman of the Chapel Royal that same year. In 1591, following the death of John Blitheman, he became organist at the Chapel Royal; in 1592 he received his doctorate from Oxford, and in 1596 he became the first professor of music at Gresham College on the recommendation of Queen Elizabeth, who admired him. There is some evidence that she sent Bull on espionage missions: his eighteen-month trip to the continent in 1601-2, ostensibly for health reasons, has never been satisfactorily explained, and his whereabouts there, apart from a visit to Brussels, remain a mystery. On the death of Elizabeth, he entered into the service of King James, establishing a reputation as a skilled composer, keyboard performer and improviser.