Originally Posted by: WilldridgeCan you give us the name of the chords?

If, however, you mean Alt is the name of the chord, I suspect Alt simply stands for "Alternative"; either another way to play an already mentioned chord, or a chord you can use instead of the the one normally played.

Alt stands for Altered.
And the name for the four chords I mentioned before is Alt.
So if you are playing the fallowing chord progression:
Dm7,GMaj7,CAlt
Which one would you play at the end? And Why?
My original question was. How come the four type of chords have the same name; when their formula and structure is different?

And not all those chords are compatible with the Alt Scale.