#1
Hey. I've been playing a lot of Chevelle in Drop B, and also Mudvayne and Thrice. They both use drop chords but add an extra finger and it makes them sound a lot better. I wonder if anyone knows the theory behind it. Or when these are used a lot.

Ex:

G 10
D 8
A 8
D 8

And

G 10
D X
A 8
D 0
(I know this one is just an octave but you play the open top string. But it sounds so good. Does 'work' if not in drop?"

D 5
A 3
D 3

D 7
A 3
D 3

D 10
A 7
D 7

Also Mudvayne used an interesting one in

D 2
A 3
D 2

Thanks.
#2
the ones with a note 2 frets higher on the higher D string are called Suspended chords ( the add a 2nd to the Root on the low D)

This:
D-10-
A-7--
D-7--
Is an A minor chord (see how the 10 is a C note)

The last one is a C major without the fifth and the 3rd octaved (lower)

This:
G-10-
D-x--
A-8--
D-0--

Is a minor chord without the fifth... the open D is the root and the 8 (and octaved 10) are an F which is the minor 3rd of D.
Gear:
ESP LTD EC1000
Douglas Spad (Alder) [ custom wired with EMG and Passives ] : Kramer Striker FR424SM
Line 6 POD X3Live : Digitech Rp80 : Tascam US144
Kustom Sound (crappy ass) solid state amp
Old Steel String Acoustic (some local company)