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☆ Gen Segawa (@pianistGS) · Twitter▼
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#Playing the piano while understanding harmony #Bach #Invention

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↓ You can skip each table of contents by clicking the time
0:00-Greetings 0:38 Praeambulum score used (from "Music Notebook for Wilhelm Friedemann Bach")

2:46 Harmonic analysis start. The tonality is C-Dur C major with Do sound as the keynote.

3:21 At the beginning, the intonation that crescendos with do-re-mi-fa 3:48 J.S. Bach's handwritten preface to "Invention and Sinfonia" says "Cantable", and he wants you to learn to "sing" in two and three voices 5:14 [ II, IV, VI Harmonic analysis method], the highest note Fa of the opening Do-Re-Mi-Fa has the property of rising as the fourth note.

7:19 Explanation of phrase ending "grammar". [half-delay] ends with [dominant dominant chord], [full-delay] ends with [tonica key chord]

11:12 The same Motiv motive has different inflections depending on the chord. The way the crescendo is different in the 1st and 2nd measures! ?

15:00 Put parentheses in the writing to make it less nuanced


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17:30 ★Glorious sound problem "Triller (from above) or Prara (from below)"

21:13 In J.S. Bach's eldest son "Music Book for Wilhelm Friedemann Bach", the title of the piece is "Praeambulum" instead of Invention

23:53 The ornament on the 4th beat of bar 6 is also the end of the phrase, so it's a "triller" 26:04 The ornaments of the 1st and 2nd measures are "plallah" from the perspective of "dissonance" 28:08 Bars 1 and 2, plala By playing with , it becomes an eighth note legato


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29:41 3rd measure~ Phrase feeling of the left hand, complete cessation. And modulation 32:26 The right hand is a series of mirror-shaped motives at the beginning. that sense of harmony

36:57 Bar 4,5, transposed to G major G-Dur 45:11 Bar 5,6, G-Dur cadence.



51:26 Measure 8, is the ornament a triller? Prara?

53:28 Bar 9, transposed to C major C-Dur

57:44 Bar 10, transposes to d-moll in D minor 59:17 Considers the transposition part ahead of schedule. ④The sound of Si♮ on beat is already d-moll VI (enharmonic modulation)


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1:02:27

1:09:31 Bar 13, explanation about "golden section".


1:14:48 bar 13 beat ③

1:16:35 At bar 14, beat 4, the grace note is the end of the phrase, so it's a triller.


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1:21:05 from bar 15

1:24:28 C-Dur complete cessation in 18th bar. 　1:25:36 It was changed to C-Dur around the 3rd beat of the 16th bar, when the leading sound Do# of d-moll disappeared and became Do♮

1:28:07 Measure 18, beat ③. At the 4th beat of bar 19, it sounds different from "Invention". The early form unique to "Praeambulum" is "Si♮" 1:30:53 Bar 20 beat 4, Praeambulum contains ornaments.

1:31:17 bar 21. The left hand seems to have a total cadence, but the right hand is in Si♭ [V degree of IV], which is called [alternative cadence]. See "Equal Temperament Vol. 1 Prelude". 1:36:06 Think of "C7" in the 3rd beat of bar 18 as a modulation to F-Dur. Even Bach was confused! ?


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1:45:36 Last right hand, use finger pedals instead of keeping 16th notes. I actually found a musical score that proves that Bach wrote like that. As a human being, Bach himself would have played with five fingers.


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1:51:29 Future YouTube schedule. I would like to analyze the harmony of inventions, equal temperament, French suites, Beethoven's 32 piano sonatas, etc. 1:52:07 Information on channel registration, good button, super thanks, member registration.


【bonus】
1:54:09 Praeambulum's turn. This is the source of what is said to be the "recommended order of study" rather than playing the inventions according to the numbers. 1,4,7,8,10,13. 15 descended to 14,12,11,9,6,5,3,2.