Asus2
Notes: A – B – E — 1 – 2 – 5 (suspended chord: the third is replaced by the second)
Here the third is replaced by the second (B instead of C#/C): the chord keeps an open, ringing sound, less tense than a sus4. Three of the five strings played open (E, part of A, high E) explain that "bell-like" tone, widely used in fingerstyle intros to alternate with the full A chord.
Every sheet in the catalog that uses the Asus2 chord, across all styles and levels. The same chord comes back in very different contexts — a blues grid, a pop turnaround, an arpeggio sequence: a good way to review it without always playing the same thing.