I want to know the answer to the following question:
What did David Atherton co-found?
All the background I'm provided with is that "The same local musical tradition produced eminent figures such as Sir William Walton (1902–88), son of an Oldham choirmaster and music teacher, Sir Thomas Beecham (1879–1961), born in St. Helens, who began his career by conducting local orchestras and Alan Rawsthorne (1905–71) born in Haslingden.". Is that enough to answer the question?
Answer: no