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Published on Nov 18, 2008
http://www.playpiano.com/keysignature... In order to tell the key of a song one needs to be able to understand the key signature at the start of a line of music. The sharps occur in the same order, as do the flats, but reverse. Come on over to http://www.playpiano.com and sign up for our free newsletter by email on piano chords and chord progressions if you like this kind of thing and want to learn more.