The Bach Two-Part Inventions were composed as teaching pieces and appear in ascending order by pitch, starting with C and using only those Major and minor keys with no more than four sharps or flats. All Inventions, clearly engraved on two pages with no page turns, include editorial markings and suggested tempi. The well designed table of ornaments, presented on a large easy-to-read staff, shows a picture of the ornament, an accurate description of execution, and exactly which notes to play.