55 powerfully-voiced stops, directly in the choir with little casework, was quite a contrast to Green's more gentle 23-stop instrument. The present-day instrument was built in 1877 by Henry Willis & Sons. Walter Alcock, who was organist of the cathedral from 1916, oversaw a strictly faithful restoration of the famous Father Willis organ, completed in 1934, even going to such lengths as to refuse to allow parts of the instrument to leave the cathedral in case any unauthorised tonal alterations were made without his knowledge, while allowing some discrete additions in the original style of the organ (as well as modernisation of the organ's actions) by Henry Willis III, the grandson of Father Willis. The instrument was extensively restored between 2019 and 2020. Organists It is recorded that in 1463 John Kegewyn was organist of Salisbury Cathedral. Among the notable organists of more recent times have been a number of composers and well-known performers including Bertram Luard-Selby, Charles Frederick South, Walter Alcock, David Valentine Willcocks, Douglas Albert Guest, Christopher Dearnley, Richard Godfrey Seal and the BBC presenter Simon Lole. Choir Salisbury Cathedral Choir holds annual auditions for boys and girls aged 7–9 years old for scholarships to Salisbury Cathedral School, which housed in the former Bishop's Palace. The boys' choir and the girls' choir (each 16 strong) sing alternate daily Evensong and Sunday Matins and Eucharist services throughout the school year. There are also many additional services during the Christian year particularly during Advent, Christmas, Holy Week, and Easter. The Advent From Darkness to Light services are the best known. Choristers come from across the country and some board. Six lay vicars (adult men) comprise the rest of the choir, singing tenor, alto and bass parts. In 1993, the cathedral was the venue for the first broadcast of Choral Evensong (the long-running BBC Radio 3 programme) to be sung by a girls' cathedral choir. Cathedral constables The cathedral previously employed five cathedral constables (known as "Close Constables"), whose duties mainly concerned the maintenance of law and order in the cathedral close. They were made redundant in 2010 as part of cost-cutting measures and replaced with "traffic managers". The constables were first appointed when the cathedral became a liberty in 1611 and survived until the introduction of municipal police forces in 1835 with the Municipal Corporations Act. In 1800 they were given the power, along with the city constables, to execute