What happened 1824 AD in Austria

Two commissions in 1822 improved Beethoven's financial prospects. The Philharmonic Society of London offered a commission for a symphony, and Prince Nikolas Golitsin of Saint Petersburg offered to pay Beethoven's price for three string quartets. The first of these commissions spurred him to finish the Ninth Symphony, which was first performed, along with the Missa Solemnis, on 7 May 1824, to great acclaim at the Kärntnertortheater.