Hi VG,Petey, I'm shocked! That 1104 version of C#m never occurred to me before. I checked, it's not in my 'go to ' chord dictionary. How odd, to learn something new, that's so simple, after so long a time playing. Thank you for that!
I recall subbing for a bluegrass mandolin player who had another gig. After we'd been playing for a while, the Dobro player said, " Hey, let's play the one that's not in G."I only play in three or four keys generally but when I'm doing a gig somewhere I like to mix them up in my play list. It is a bit redundant for the audience I think to sit through a half dozen songs in C major. I try not to play more than three songs in the same key back to back. Just another key centric consideration.
While I agree with that in concept (having many years of classical piano training and theory), it requires a knowledge of the keys and not everyone has that knowledge off the top of their head. I.e. the key of Ab... ok... contruct me an Amaj9. First of all, one has to know that the key of Ab has 4 flats (which ones!) B, E, A, D, and then count up from the root and construct the chord. That is not that easy. Still, I get your point.Better still to learn to derive the chord shapes for yourself. It's faster and more flexible. For instance, for a typical 9th chord, I know 12 different ways to voice the chord, and I've used them all at one time or another. I've yet to find an app that provides so many alternatives. By deriving the shapes yourself, you also learn to identify which string plays which component in your chord (information which has helped me out countless times). The process can work in reverse as well, helping you to identify chords/shapes you arrive at on your own through noodling (though there's some inherent ambiguity in determining the proper name for a chord, since you also have to consider the context in which it appears, and the root might not be one of the notes you're playing).