All this has definitely helped out. I know how to find out if the chord is in a certain key, but what I was really hoping to find out was if (Yeah, I want the easy way out :rolleyes: ) there was any pattern to knowing which 7th chords, or heck, any chords were in the key. Maybe a simplified (if necessary) list of chords that fit into a key. C major would be an easy way to go with this I would think. I hate to seem like a lazy bum that wants the easy "patterns" out of everything, but I'd like to try and avoid writing out scales and chord structures every time I go to write songs, and I would HOPE that this is possible. Thanks. And also, if this changes things, I know how everything works at this point, so the little shortcuts will help to increase my knowledge, and on my own time, I can still make sure I really understand how and why they fit in. :cool: