Can someone give me a simple explanation of how to form chords? I play in an orchestra so most other aspects of Music Theory I already know, except for chords, because the music is prewritten. I even already kind of have a feel for chords, because I can form them if i go instrument by instrument, because I know keys that match cuz I know my key signatures.
The thing I don't get are those chords that are called sus4, M7, aug and stuff like that. I wanna be able to do different chords on the keyboard so I can get more depth in my beats.