Johann Sebastian Bach - Musikalisches Opfer, BWV 1079: Sonata, III. Andante

Johann Sebastian Bach's "Musikalisches Opfer" (The Musical Offering), BWV 1079, is a collection of keyboard and chamber music works. Here are some interesting facts about it:

1. Dedication to Frederick the Great:

   • Bach composed "Musikalisches Opfer" as a result of an encounter with Frederick the Great in 1747. The king gave Bach a challenging theme and challenged him to improvise a three-voice fugue on the spot.

2. Artificial Canon:

   • The collection includes canons, with the most famous being the "Canon per augmentationem in contrario motu," a complex canon that is both inverted and augmented.

3. Ricercare:

   • The work features a ricercare, which is a type of elaborate contrapuntal composition. Bach's ricercare in "Musikalisches Opfer" is considered one of the most significant examples of this form.

4. Sonata and Trio:

   • "Musikalisches Opfer" also includes a trio sonata, where the flute, violin, and basso continuo play a significant role. This trio sonata is known for its intricate counterpoint.

5. Canons in Unusual Forms:

   • Bach's canons in this collection are not only musically rich but also interesting due to their unusual structures, such as the "Canon a 2 perpetuus," a crab canon, and the "Canon a 4," a quadruple canon.

6. Royal Theme:

   • The theme given to Bach by Frederick the Great is used throughout the collection. It is a highly structured and symmetric theme, providing Bach with a challenging foundation for his musical exploration.

7. Symbolism in the Title:

   • The title "Musikalisches Opfer" translates to "Musical Offering." The use of the word "Opfer" (offering) may have symbolic significance, suggesting Bach's dedication and offering of this work to Frederick the Great.

8. Publication and Legacy:

   • "Musikalisches Opfer" was published in 1747, and its complexity and depth have made it a celebrated work in the Baroque repertoire. It showcases Bach's mastery of counterpoint and his ability to create intricate, intellectually stimulating compositions.