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
Gloucester Cathedral controlled by two swell pedals, one for each side of the case. Directly above the Swell is the Great organ which is split into East and West divisions; it comprises two separate principal choruses. The fourth manual is a West Positive, mirroring the function of the Choir organ for the West side of the Cathedral. In 1582, Robert Lichfield is recorded as the organist of Gloucester Cathedral. Notable among the organists are composers and choral conductors of the Three Choirs Festival, Herbert Brewer, Herbert Sumsion and John Sanders. Herbert Howells, who was a pupil of Brewer, composed a Magnificat and