Talk:This Day Aria, Part 1/@comment-4919288-20120425033107/@comment-4914628-20120426015342

@ZeeCount:

I finished notating the score. It took a while. I arranged it for piano. The melody is in the right hand with the basic chords in the left, so it should be easy to analyze voice. Anyway, here is the Sheet Music and here is the audio file generated from it. Mind the key signature of the score though, as the piece isn't really in D flat major like it suggests. I'll fix those details later.

I haven't done a full analysis of it so far, and I won't tonight as I need to go to sleep (it's almost 4 a.m.). When I get around to it, I'll post it in a blog. I do think however that you'll appreciate what I found while arranging the song in relation to the key though, as it appears neither of us were right =S

The song IS primarily is a minor key, so you were right about that. The first key, however is D flat major, but it modulates into a b minor at bar 5. Since b minor is not a related key to d flat major, one can almost immidietely guess that the piece as a whole is not actually in d flat major, like I thought it was. It was just misleading.

Although b minor is a related key to d flat minor, we can eliminate d flat minor as a general key because the song is only in d flat minor for a short while, and the only reason that the first cadence landed on a d flat minor chord was because it was inturrupted.

Throughout the song, the key keeps switching from some key into b minor. Also the last section of the song is in b minor, and the entire piece ends in a nice v i cadence in b minor. So when we look at b minor, d flat major is merely the supertonic of b minor, and d flat minor is the immediate minor of d flat major. Therefore, that jump from d flat major to b minor at the beginning would make sense if the overall key was in b minor.

Therefore, I see b flat minor as the only possibility because it is the only key that allows us to modulate into the other keys of the song using related keys.