DATE: Wed, 09 Nov 1994 01:29:00 CST From: Winslow Yerxa <76450.32~ompuserve.com> Subject: Minors and manners
I've been following the various minor key discussions with more interest in the tone of the combatants than in the actual contents. My comment -
Lighten up, George. Music theory is not ordained by God Almighty, nor does it contain any verifiable facts of nature. Different logical constructs have been used at different times to explain identical usages. And real usage often flouts the rule books.
Two cases in point.
Key signatures for minor keys in J. S. Bach's time commonly skimped on both sharps and flats. For instance, D minor was often written without any sharps or flats in the key signature (as in the so-called Dorian Toccata), while E major might be written with three sharps (as in Handel's "Harmonious Blacksmith" sonata). So key signatures are not carved in stone as a reliable guide to indicating the minor mode. It is usage and usage alone which determines this. Much modern tonal music is moving away from the use of key signatures and toward the use of self-canceling accidentals due to the fluidity of both mode and key center occuring in that music. Sic transit musica ficta.
Melodic minor scales are supposed to go up with the sixth and seventh degrees major and go down with them minor. Thus saith the rule book. Yet J. S. Bach delighted in breaking this rule - I had a counterpoint teacher in university who frequently pointed out instances of this. He had a deep knowledge of the counterpoint of both Bach and Palestrina and was an accomplished continuo player. He had nothing but contempt for this rule except for the most basic pedagogy. Also, in jazz since 1945, the ascending version of the minor has been used both ascending and descending as a substitute dominant (for instance F melodic minor over E+7. Sure this is messy in terms of enharmonics and proper assignment of scale degrees, but that's what it's called in actual practice, and it's the easiest way to convey the scale materials used.)
If someone wants to define a minor scale in terms of its differences from its tonic major (three lowered modal degrees in the scale) that's perfectly all right. This is a handy way of pointing it the difference to a curious beginner without first attempting to explain key signatures or modes. Later you can get into the full-boat theory lesson if they need to understand it.
After all, the empirical evidence shows exactly that - Gee, C major has all natural notes, while C natural minor has Eb, Ab, and Bb - third sixth, and seventh. Anything else, like relating it to modes and key signatures, is a logical construct into which this phenomenon happens to fit. But there is no immutable law of physics that ordains that this construct is the only way to arrive at a minor scale.