I was taught a long time ago about chord formulas. The basic thing of it is that no matter what note you play on your piano you can count the half steps in the formula to make your chord.

For example, if you play a C, that becomes 0. To make a major chord the formula is 0-2-1-1 1/2, so with C being 0, you count up 2 half steps (0, half, one, one and a half, two) and land on the E. Then the E becomes 0 and you count 1 1/2 (0, half, one , one and a half) and land on G. Add another 1 1/2 for a dominant 7th. Minor is 0-1 1/2-2. Again add another 1 1/2 for a minor 7.

And so forth. Did anybody else have a teacher who taught that method? Most teachers seem to teach "Major = 1,3,5, 1, b3, 5" and so forth. My guy actually taught me the half step method.

Last edited by eddie1261; 10/25/15 07:35 AM. Reason: typos