Originally Posted by julzius
all over it. An easier way to write it is like this (I just use X to substitute the chord name)
I used to think that an A7 = AM7, then when i understood my scales and how to build chords, and found that major 7, I think i cried a little by how good that chord sounds and how long i went without it.
This is the easiest way to write formulas for chords, as stated by julzius.
I would only make one slight suggestion, whenever you name the X7 chord, name it as "Dominant 7th" Or dominant chord, even though it will NOT always have a dominant function on a progression, it is easier to remember it as such.
I highly recommend that, while searching for music theory lessons online, try to search for jazz nomenclatures in theory, as I find it to be an easier and more fun learning approach than classical harmony. No it does not mean you will learn to play jazz (if you don't want to) it's just the learning approach is different between methods and the jazz method, although not a standardized form it is nowadays more widespread and easier to understand, IMO.
Very basic harmony will be practically the same for classical and jazz, I'm talking about intervals, keys, basic triad progressions and stuff.