Original: He died on 19 August 1944 at Hitchin in Hertfordshire, just over a week after the fiftieth anniversary concert of the Proms, which he had been too ill even to listen to on the radio.
Simplified: He died on 19 August 1944, just over a week after the fiftieth anniversary concert of the Proms, which he had been too ill even to listen to on the radio.