Originally Posted by Jaded
Incorrect. If you were to mix a GMaj7 over a C then you could make a CMaj11, CMaj13, GMaj13 or a Dmin13 chord - depending on the rooting of the chords. The result would not be inharmonic and, depending on the style of music you're playing, it could sound quite good. If the right C and G7 chords are played together then the result will not be "bracing" it will be jazzy. Any of the early 90s piano house, or some of the newer deep house music would really benefit from the combination of these chords.
This is correct, except Cmaj11 would be strictly Cmaj #11 (Cmaj 11 is with the F nat, and not as common a chord, and pretty "bracing" by comparison).
Also, couldn't technically have a Cmaj 13 coz there's no A note in chords C or G. For the same reason, you won't get a Gmaj 13, because a 13th chord implies the 9th, unless you write "G maj 13 omit 9
." Similarly, you're not going to get a Dmin chord coz there's no F nat in either chord
This is all assuming we're understanding "G maj 7" to not
be G dominant 7, which is normally written as "G7"
He he he, just being nitpicky