J.S.Bach:Invention and Sinfonia BWV772-801

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“For the clavier, especially those who are especially keen to learn, not only to learn to play two voices precisely, but to go further, to treat the obbligato voice correctly and properly, and at the same time to discover a good invention. , ideas), but also to develop them properly, especially to master the cantabile technique, and with it a solid anticipation of the composition. a guide.”
– Produced by J.S. Bach, Kapellmeister of Duke Anhalt Köthen. 1723.
Compiled during Bach’s stay in Köthen (1717-1723). During this period, he remarried to Anna Magdalena, gained the understanding and trust of the feudal lord, and was very spiritually fulfilled.With a passion for secular music nurtured in his previous post in Weimar, furthermore, it was suitable for the period of music education for sons and disciples, and educational works were produced one after another. “Invention and Sinfonia” is an arrangement and refinement of the material contained in these educational clavier textbooks, arranged in order of tonality.This is a collection of 30 pieces, 15 each for Invention and Sinfonia.”Invention” means “originality, ingenuity, and ideas,” and “sinfonia” means “to resonate together.” and it is not a term that refers to a particular musical form.
This collection of Bach’s works has many opportunities to be played by relatively beginners (my first Bach is Invention), but it is a short piece with few notes, but it is a simple beauty and Bach’s music filled with “how to sing”. It is a collection of extremely artistic works.Even if an adult plays it, it’s even more enjoyable, and since you don’t have to work hard to read the score, you can delve deeper and discover another side.The title written by Bach himself about this collection is very wonderful. That’s all. I would like to quote here.
mezzopiano’s recommendation
♫Sinfonia No.12 BWV798
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Invention
No.1 C Major  BWV772
No.2 C Minor BWV773B2
★Play smoothly in cantabile.
☆Written in strict canon. So that both the left and right parts can be played equally and independently.

I want to make a solid plan for where to bring the top of a long-lived theme and how to play it. If you play without thinking about anything, the performance will be without a sense of phrase.
The final note of the theme is Es, which is the 3rd note of the tonic chord, and lacks a sense of ending.This is one of the factors that characterize the theme as it wanders between tonalities. Don’t play it proudly, so that it disappears somewhere.
No.3 D Major BWV774
No.4 D Minor BWV775
No.5 E Flat Major BWV776
No.6 E Major BWV777
No.7 E Major BWV778
No.8 F Major BWV779B2
★Play in 3 beats. In particular, since the beginning of the theme is backbeat, be careful not to play too heavily.
☆Beautifully play fine passages formed by 16th notes. Place the 16th notes on both hands beautifully, and play while considering the balance of the 6th notes.

A simple, lively and beautiful piece written in canon.It has a theme in which the motives of the first half and the second half are symmetrical, as if the 8th note goes up loud like a fanfare, and then the 16th note goes down all at once.
1st development:[1]-[12]F-dur
2nd development:[12]-[25]C-dur,g-moll
3rd development:[26]-[34]B-dur,F-dur
The subject is placed in the above key. The first half of the theme is omitted from the 3rd development in B-flat major. By not presenting the beginning of the theme, it seems that the momentum towards the end of the piece is added without giving a calm break.
[32]-[34] You have to hear the B-A-G-A line in the upper voice as well.Since the last note ends with three chords, it is a heavy closing part.Among the pieces recorded in《Invention and Sinfonia》, the only pieces that end with all three notes of the tonic chord are 〈Invention No. 1〉and this 〈No. 8〉 (the others are a single note, or a chord with one note missing). Play the tonic chord with dignity.
No.9 F Minor BWV780
No.10 G Major BWV781
No.11 G Minor BWV782
No.12 A Major BWV783
No.13 A Minor BWV784
No.14 B Flat Major BWV785
No.15 B Minor BWV786
Sinfonia
No.1 C Major BWV787
No.2 C Minor BWV788
No.3 D Major BWV789
No.4 D Minor BWV790
No.5 E Flat Major BWV791
No.6 E Major BWV792
No.7 E Minor BWV793
No.8 F Major BWV794
No.9 F Minor BWV795
No.10 G Major BWV796
No.11 G Minor BWV797
No.12 A Major BWV798
No.13 A Minor BWV799
No.14 B Flat Major BWV800
No.15 B Minor BWV801