Hi Bob.

I think what you mean is that you can't copyright a chord chart, which is correct. However, once you play an instrument over the chords it becomes a piece of music which you can copyright. If you were right, then every piece of music based on a 12 bar blues would be in the public domain. Obviously this isn't the case. Once you play over the chords you introduce phrasing and timing which identifies it as original. If your phrasing and timing copies exactly that of an existing piece, then you're in trouble. See what I mean?

If you get into defining what is and what isn't a piece of music you've got real problems. Think about John Cage. Not that will make your head hurt!

ROG.

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