I want to know the answer to the following question:
What time period is known at the common practice period?
All the background I'm provided with is that "While a similar term is also used to refer to the period from 1750 to 1820 (the Classical period), this article is about the broad span of time from roughly the 11th century to the present day, which includes the Classical period and various other periods.". Is that enough to answer the question?
Answer: no