Complex sentence: Most of the time, players would not have written music to follow because parts were handed down from generation to generation and were learned by wrote.By the 17th century, the timpani moved indoors for good and composers began to demand more from timpanists than ever before.
Split into simpler sentences: Most of the time players would not have written music to follow because parts were handed down from generation to generation and were learned by wrote. The 17th century saw both the timpani move indoors for good and composers beginning to demand more from timpanists than ever before.