Complex sentence: The term did not exist prior to the 16th century, when all "cultured" music was vocal, but with the rise of instrumental music in the 17th century the term emerged as the instrumental art became sufficiently developed to be embodied in sonatas.
Split into simpler sentences: The term did not exist prior to the 16th century, when all "cultured" music was vocal. With the rise of instrumental music during this period the term emerged as the instrumental art became sufficiently developed to be embodied in sonatas.