Bach's Inventions is a collection of 15 Two-Part and 15 Three-Part pieces. Originally composed as pedagogical exercises for his students their contrapuntal composition still works brilliantly as anintroduction and practice in counterpoint. Bach wrote the Inventions as a way for his students to practise playing in two parts then after some progress in three parts;with an end goal of becoming more accomplished at composition. The two groups of pieces are arranged in order of ascending key with each covering eight major and seven minor keys.
