generate questions: The term "classical music" did not appear until the early 19th century, in an attempt to distinctly canonize the period from Johann Sebastian Bach to Beethoven as a golden age. The earliest reference to "classical music" recorded by the Oxford English Dictionary is from about 1836.
When did the term "classical music" appear? {sep_token} What period is referred to as a "golden age"? {sep_token} What year is the earliest reference to 'classical music'? {sep_token} What book holds the earliest reference to 'classical music'? {sep_token} What term did not appear until the early 19th century? {sep_token} What 'age' is the period from Johann Sebastian Bach to Beethoven referred to as? {sep_token} What year was the earliest reference to classical music? {sep_token} In what book was the earliest reference to classical music? {sep_token}