I have come across this short piece. I am unsure about the key (even though it uses 2 flats as its key signature - so I am assuming it mostly is Bb major). I could not identify one of the chords (chord 2), & hence have not been able to find out the cadence. enter image description here

I have guessed the chords 1 and 3. Chord 1 - Gm, Chord 3 - F. The chord coming before chord 1 is Bb. What could possibly be the cadence, & the chord 2?

closed as off-topic by Todd Wilcox, Tim, Shevliaskovic, David Bowling, user45266 May 13 at 15:06

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    Dear gosh, Chord 1 looks horrible. Are the tenor and alto voices really supposed to be crossed like that? – Dekkadeci May 13 at 5:30
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    Yes, they wanted to show how Bach used high tenor parts, where the tenor part is higher than the alto. – Grace May 13 at 6:33
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    @Dekkadeci but the key signature is 2 flats, so it can't be a perfect cadence right? According to your answer, it would be a ii7b - V, making it an imperfect cadence. Would this be correct to say? – Grace May 13 at 6:38
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    This will probably be closed. If you look in the help centre, you'll realise that asking questions such as this isn't part of the site's remit. – Tim May 13 at 8:18

I'll assume the D at Chord 2 is an accented neighbour tone, so Chord 2 includes the C and is a C7/E chord. This means that the cadence is an authentic cadence in the foreign key of F major, as Chords 2 and 3 can be explained as V6/5 - I of F major.

  • With that D note, it could be construed as C9. F isn't that foreign - it's the V of Bb, making the previous chord V/V. – Tim May 13 at 6:20
  • @Tim can you elaborate further? – Grace May 13 at 6:39
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    @Grace - the notes are E Bb G D C. Together they make C9 - the dominant 9 of C. The following is F major, making an imperfect cadence at that point, which does seem to be a cadence point. – Tim May 13 at 7:00
  • Oh alright, it's clear now. – Grace May 13 at 8:04

Chord 2 is essentially a C7 (dominant 7) in first inversion (over E in the bass). The soprano voice is an accented passing note from the 9 to the tonic - it could be considered an add 9 chord. This could also be interpreted as a 7-6 suspension (as it forms an interval of a 7th and then a 6th from the bass note (E).

This would mostly likely put the cadence in the realm of a perfect cadence into F. Alternatively, an imperfect cadence where the C major chord is the secondary dominant (if still in the key of Bb).

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