Started by jessetr, December 17, 2021, 03:13:12 AM
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Quote from: jessetr on December 17, 2021, 03:13:12 AMHi,As I learn music theory, I know that Moonlight is in C# minor. But as I test that, and play just C#, at some point during the 1st movement the C# suddenly sounds off key for a while. If you need the spot where it goes awry, I will find the measure. But I was hoping that all you experts would know the spot already. Does the piece change key? It doesn't indicate it anywhere on the sheet music. What is going on exactly? Please feel free to use technical language.Thank you!
Quote from: Holden on December 17, 2021, 12:04:49 PMThe music is changing key all the time as well as moving between the minor and the major. For example the first two bars are technically in C# minor and then changes in bar three to A for half a bar before moving to D/F# in bar 4, G#7 in bar 5 then back to C#minor again in bar 6. If you Google it, you should be able to find sheet music that will show you those key changes.
Quote from: (poco) Sforzando on December 17, 2021, 12:33:47 PMI'm going to disagree with you. The A major chord in 3 is the submediant (scale degree 5) in C# minor. The music has not changed key at this point. The D/F# is flat degree 2, or what's known as a Neapolitan 6th. It takes more than a chord to establish a key change. The first modulation in the piece starts in bar 7 and establishes the relative major (E major) in bar 9. But rather unusually, instead of closing the exposiiton in E major, Beethoven diverts to F# minor at 23.
Quote from: Holden on December 17, 2021, 05:14:11 PMI'll bow to your much better knowledge of musical theory - mine's very rusty obviously.
Quote from: (poco) Sforzando on December 17, 2021, 12:33:47 PMI'm going to disagree with you. The A major chord in 3 is the submediant (scale degree 6) in C# minor. The music has not changed key at this point.
Quote from: Dry Brett Kavanaugh on December 22, 2021, 09:19:56 AMYou maybe right but this is not necessarily the case, I tend to see. The Amaj could possibly be a tonic chord in a changed key of Amaj. Your interpretation is valid only if the Amaj here is placed as a subdominant to Emaj (submediant to C#min). Again, your interpretation maybe right, but we must see the score. if D note is raised, you are right. If D is not raised, it may indicate a key change to Amaj.
Quote from: jessetr on December 19, 2021, 05:08:57 PMWhat are the key changes for bars 23 - 46?
Quote from: (poco) Sforzando on December 22, 2021, 10:43:39 AMNo key changes in the first 7 bars; these are all in the tonic key of C# minor. The A chord is the submediant, the D chord in first inversion (where the note D is flattened from D#) is a Neapolitan sixth.
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