Quote:


For a long time the 'standard' Alt chord (sometimes called C augmented, also writtne 'A+' has been thwarting a comprehensive pin down in my brain, but I am getting nearer figuring out why.




Stop right there, the ALT chord is kind of like a "your choice" situation.

ALT chord can contain the b5 OR the #5 in it, sometimes even the b9 or #9. The dom7 can be used as well in certain instances.

It is not always simply an Augmented chord, if that was the case, why have the ALT designation, you could simply go with Aug or X+ and be done with it.

If you open some BB songs with the ALT chord designated, and watch what the keyboards play or what the notation shows, you will soon find out what's going on here.

Use of the BB Scale Generator can also show you some ways to do scale work over the ALT chords in those songs.


--Mac