1917, into UCD’s medical school in 1919. Following the signing of the Anglo-Irish Treaty in London on 6 December 1921, Dáil Éireann met in UCD’s Council Chamber between 14 December and 10 January 1922. Ratification of the Treaty by Dáil Éireann took place in UCD on 7 January 1922 with 64 deputies in favour and 57 against. Final session of Dáil Éireann in UCD took place on 10 January 1922 when Arthur Griffith was elected president of the Dáil. In 1960 the Irish Government agreed to build a new campus for UCD at Belfield. In 1974 the Government agreed that the Earlsfort Terrace site would be completely renovated to become the National Concert Hall. Work began in May 1978. President Patrick Hillary officially opened the National Concert Hall on 9 September 1981 with the RTÉSO and a number soloists and choirs under Colman Pearce. The Chieftains had the honour of giving the first traditional Irish music concert on 11 September 1981, while pianist John O'Conor gave the first 'solo' recital on the 12 September. Programme The International Concert Series is the flagship of the National Concert Hall’s programme. Other series include the Chamber Music Series which takes place in The Kevin Barry Recital Room and puts on recitals and concerts, ranging from baroque to contemporary music. Performance Areas The Main Auditorium, seating 1,200, is used for large scale concerts and some operas. The John Field Room, seating 250, is used for small recitals and pre-performance talks. The Kevin Barry Recital Room, seating 120, is home to the Chamber Music Series and other small scale recitals. It was opened in 2016. The Studio, seating 100, is used for pre-event talks, receptions and corporate functions. Resident bodies Musical groups National Symphony Orchestra (NSO) The National Symphony Orchestra was founded in 1948 and is one of Ireland's principal classical music groups. It performs a broad programme of live performances, as well as education and mentoring initiatives. In July 2018, the Government agreed in principal that the RTÉ NSO should come under the remit of the National Concert Hall; this transition was completed in January 2022, as part of this change the NCH also took control of RTÉ Cór na nÓg, RTÉ Vanbrugh Quartet and RTÉ Philharmonic Choir. Irish Baroque Orchestra The Irish Baroque Orchestra performs music from the 17th and 18th centuries; it became an NCH resident in 2013. Chamber Choir Ireland Chamber