If you wanted to be a digital artist, what classical form of art would be the best one to study?

Contoured art, since it’s digital art you need to learn to draw outlines of the drawings and you can do the rest computer wise

It depends on what type of third separates the three notes.for example: if you have two mayor thirds is an "aumented chord"if you have two minor thirds is an "diminued chord"if you have one mayor first and then one minor is a "mayor chord"and inverted is a "minor chord"