Originally Posted by: Lao_Tzuwhat is the chord formula and the difference between add chords and sus chords what makes it different i was told its something to do with the maj3rd but im a lil confused. also when u do the hendrix fingering with a sus chord it has the maj3rd in it as well as the sus 2nd so does that make it majsus2? thats something id like to clear up. just as if u make an add9 chord with the minor 3rd after does that make it a minor add9 chord?

The only way I could accurately analyse the chord that your talking about is to see it (one of the chords called the hendrix chord was some kind of non diatonic augmented something or other - Id have to see it) - its is definately not s sus chord.

Any sus chord is literally defined as a suspension of the third in the triad. So if the chord has a third it can't be called a sus.

A sus chord doesnt have a voicing and is not named either major or minor - even though the mode of the chord has a voicing the chords are simply called sus chords

For Add9 nine chords yes it is a minor add9 or a major add9 - note if the 7th is included in the chord that the rules for naming change...

Because thats a full 9th chord

If you want to know the "chord forumla" first learn about intervals - and then triads (if you don't study them in that order - you will screw yourself)