Question: what are triads on a guitar?
Answer: A triad is a set of three notes stacked in 3rds. Playing in 3rds on the guitar means that you start on a scale degree, count it as “1,” and then move to the scale degree that is three away, “3.” For example, the G major scale is G-A-B-C-D-E-Fs. ... A triad is a group of three notes that are all a 3rd apart.