Prime Minister H. H. Asquith gave a speech entitled the War, using the occasion to recruit from the all-male audience. At various times the musical and the political overlapped, on occasions such as fundraising concerts for the Republican movement in Spain in the 1930s and sexcentenary celebrations of the foundation of the City of Edinburgh in 1929. The end to political rallies in the Usher Hall came after a serious incident in 1934, when Sir Oswald Mosley came to speak. Between five and six thousand people protested outside, and several people were injured. In 1986 the Commonwealth Games came to Edinburgh with the Usher Hall providing the venue for the boxing tournament. The extensive basement rooms of the Usher Hall made the building ideal for use as an air-raid shelter and the venue was equipped for use during the Second World War. However, there are no records of it being used as such, but painted signs on internal doors, such as "No Dogs" indicate that preparations were made. Musical history As a platform for international classical musicians, the hall hosted the Vienna Philharmonic, under Bruno Walter, at the first festival in 1947. It is also the Edinburgh home of the Royal Scottish National Orchestra, who play regularly during their season. The Scottish Chamber Orchestra, Scottish Fiddle Orchestra, National Youth Orchestra of Scotland and local organisations, such as the Edinburgh Royal Choral Union and the Kevock Choir, also regularly appear. In March 1972, the Eurovision Song Contest was held at the Hall and compèred by Moira Shearer. The United Kingdom entry was sung by The New Seekers. It was also the venue of Eurovision Young Musicians in August 2018. Organ A major feature of the Usher Hall is the organ. It was built in 1913 by Norman & Beard of Norwich at a cost of around £4000, and was designed to be the focal point of the Hall, both visually and musically. The significance of the organ to the Usher Hall is demonstrated by the existence of the Usher Hall Organ Trust, who helped raise funds to restore the organ. It had fallen into disuse due to poor reliability caused by a lack of adequate moisture and temperature control, leading to it not being played for several years. The restoration work was carried out by Harrison and Harrison of Durham, and took three years to complete, with the organ being reinstalled