#1
Ok, how do you find what key a song is in? Like, ok, i make up something, and i write down the notes, then i find the key signature based on the accidentals. Hah, someone told me this, but i don't understand it, could someone explain that, how to find what key a song is in i mean. thanks. :]
#2
the way whoever told you would be the circle of fifths.


In order to this, you basically have to memorize the following:
BEADGCF
FCGDAEB

or you could memorize one and remember the other is the same only backwards.

BEADGCF is the order of flats.
FCGDAEB is the order of sharps.

That means in a key signature with 1 sharp, the sharp is F#.
In a key signature with 1 flat, it is Bb.


now if you also know this, you can memorize the circle.
http://www.carolinaclassical.com/scales/circle2.jpg
you will note that the circle basically just starts at C, and then goes in the order of BEADGCF & FCGDAEB. This indicates which key signature has how many accidentals.


And that's your finding the key of the song via accidentals & the circle of fifths.


I personally don't use this method as I find it stupid and useless in terms of understanding.
I analyze the song.
This means I know the chords of the major & the natural minor
(I ii iii IV V vi viidim)
(i iidim III iv v VI VII)

and then I just look at the chords of the song, and decide which key it makes the most sense in.

For example, the chord progression
G, C, Am, Em, G
would, using the circle of fifths method, make you assume it was C major.
However, I would see that and probably analyze it as G major because it, atleast in writing, would resolve on G.
I IV ii vi I in G. Not a good example, but its 1 AM. lol
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#3
I was told, you can oly know what key a song is in if you are classicly train,


wait

thats only if you hear it and not see any music
#4
i can tell a few keys by ear, but the way i usually do it is to input the song in tabs into sibelliusand then convert it to standard notation which genneraly will tell you what key its in.
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