Classical music is a broad term that usually refers to music produced in, or rooted in the traditions of Westernecclesiastical and concert music, encompassing a broad period from roughly the 9th century to present times. The central norms of this tradition became codified between 1550 and 1900, which is known as the common practice period.
The public taste for and appreciation of formal music of this type waned in the late 1900s in the United StatesUnited Kingdom in particular. Certainly this period has seen classical music falling well behind the immense commercial success of popular music, in the opinion of some, although the number of CDs sold is not indicative of the popularity of classical music. and