Gloucester the remains (a gateway and some walls) of Llanthony Secunda Priory, a cell of the mother abbey in the Vale of Ewyas, Monmouthshire, which in the reign of King Edward IV became the secondary establishment. The Three Choirs Festival, originating in the 18th century and one of the oldest music festivals in the British Isles, is held in Gloucester every third year, the other venues being Hereford and Worcester. Gloucester hosted the festival in 2016, and it is next due in the city in 2019. The city's main theatre and cultural venue is the Guildhall. The Guildhall hosts a huge
Herbert Howells following year by the Magnificat and Nunc Dimittis, and completed in 1956 by the "Office of Holy Communion". "Collegium Regale", the "Gloucester Service" (for Gloucester Cathedral, 1946) and the "St Paul's Service" (for St Paul's Cathedral, 1951) remain the best known and most admired of the many settings of the Anglican liturgy written by Howells for particular choirs and buildings over the next thirty years. In 1949, the organist Herbert Sumsion asked Howells if he had anything that could be performed at the 1950 Three Choirs Festival to be held at Gloucester. Howells decided to bring out the incomplete choral