2 chords are made up of the 1st, 2nd, and 5th notes of the major scale. 2 chords have a pretty and unresolved sound.
2 chords can be called sus2 as well. For example, Asus2 and A2 are the same. "sus" is short for suspended. A suspended 2nd likes to resolve down one whole step to the 1 note below it.
Below are a few 2 chords that use open strings. Explore the diagrams by pressing the buttons below to hear and see the notes and chord tones of each chord.
A2
Let's compare the Major and sus2 versions of each of these chords below