The Demontfort Hall indoor auditorium seating capacity is approximately 2000, and the hall contains a restored pipe organ believed to be the only surviving example of a large concert organ constructed by the Leicester organ builders, Stephen Taylor & Son Ltd, in 1914. The pipe organ is a particularly fine example and comprises 6000 pipes, attracting many distinguished organists to play recitals. In the 2014 the pipe organ was estimated to be worth over five million GBP.
Most of the Hall's events take place in the indoor auditorium where the programme of events ranges from jazz, ballet, comedy and opera, to world and roots music, West End musicals and classical music. The hall is said by the orchestra to be one of the best spaces in which to play music in England.