Schubert: Impromptu in G flat major

🎼🎶 Wednesday, August 11, 2021
Today we move from the key of F-sharp major to G-flat major only to discover that they are in exactly the same place! Why would a composer choose one over the other?
It depends where the composition modulates from the home key. If Schubert had written the third of his Opus 90 impromptus in F-sharp major, by the fourth measure we’d already be looking at G-double-sharp, with many more cumbersome accidentals to follow. In G-flat, that G-double-sharp is simply an A-natural, making it much easier for the composer to write and the pianist to read. There are three major keys that have this “dual nature":  C-sharp/D-flat, F-sharp/G-flat, and B/C-flat.
Here is Schubert’s exquisite Opus 90 Impromptu in G-flat major.
Schubert: Impromptu in G flat Op. 90 No. 3
Schubert: Impromptu in G flat Op. 90 No. 3

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  • John Scialdone
    published this page in Daily Beethoven 2021-08-11 09:15:27 -0400

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