“Comfortably Numb” is an example of a rock song that begins with a minor chord. Minor chords are also very common in rock and pop music. From the third, count two whole-steps (or four half steps) to find the fifth. To play a minor chord, select any root note, then count three half-steps up to the third.
Minor chords, like major chords, contain three basic keyboard notes: a root note, a third, and a fifth.