Mason was was awarded the BMus at Oxford in February 1509 and was ordained as a priest at around that time. He held the post of informator choristarum (Instructor of the Choristers of the chapel) at Magdalen College, for a fifteen month period from March 1509 until June 1510 but left to take up other posts awarded to him by influential patrons amongst them Cardinal Thomas Wolsey whom he served for a time as chaplain. He acquired various livings but in 1523 he took up one of the two Mortimer chantries in Chichester Cathedral. This was a lucrative posting in the gift of the King and it seems likely that he was given the appointment to aid the then Bishop of Chichester's efforts to enlarge and improve the cathedral choir. After a spell at Chichester he took up a post in Hereford Cathedral in 1525 where he seems to have remained for the rest of his life being appointed the cathedral's treasurer in 1545.
His antiphon Vae nobis miseris (Woe to us wretches) is a Jesus antiphon in other words it's an antiphon meant to be sung after compline in order to foster devotion amongst the laity to Jesus and his passion. These Jesus antiphons became more and more popular in England during the reign of Henry VIII as the cult of the Virgin declined. It's quite a large scale work and surprisingly modern in many respects somewhere between Fayrfax and Taverner. Enjoy :-)
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