In guitar circles, describing a chord as ‘G’ without any other information ... The 4th in this case is G, the 4th of the D major scale. The G replaces the 3rd (F#), meaning sus chords are ...

On guitar we’d struggle because ... is a very well-known chord, but it’s interesting to look at it from this perspective. If we take it from low to high, we see: root (E) - major 3rd (G# ...