The Inventions and Sinfonias (1720; revised 1723) are
30 pieces of keyboard music (15 each in sinfonia and
invention) composed by Johann Sebastian Bach. They are
sometimes known as the Two and Three Part Inventions.
Bach arranged the two groups of pieces in order of
ascending key. Each group covers the eight major and
seven minor keys. Bach wrote them as exercises and
study pieces for his 12 year old son, Wilhelm
Friedemann Bach. The 1720 versions are found in the
boy's Little Keyboard Book of 1...(+)
The Inventions and Sinfonias (1720; revised 1723) are
30 pieces of keyboard music (15 each in sinfonia and
invention) composed by Johann Sebastian Bach. They are
sometimes known as the Two and Three Part Inventions.
Bach arranged the two groups of pieces in order of
ascending key. Each group covers the eight major and
seven minor keys. Bach wrote them as exercises and
study pieces for his 12 year old son, Wilhelm
Friedemann Bach. The 1720 versions are found in the
boy's Little Keyboard Book of 1722. The invention and
sinfonias are often used as preparation for two volumes
of Bach's The Well-Tempered Clavier. Wiki