Heritage Open Day: Enjoy live music with Oxford International Song Festival at the Holywell Music Room where acclaimed soprano, Katy Thomson, will perform a short set of classical songs at intervals throughout the morning. Enjoy live music with Oxford International Song Festival at the Holywell Music Room, part of Wadham College and the oldest concert hall in Europe. Acclaimed soprano, Katy Thomson, will perform a short set of classical songs at intervals throughout the morning, including works by Haydn (who famously performed in Oxford in the 1790s) and Schubert. Drop in at any time to listen to some great music, admire the acoustic and rich history of this special building, or chat about this year's Festival (10-25 Oct).