pick the note while lightly touching the string directly over the fret indicated. a harmonic results.
Fret the note as shown, then lightly place the index finger over ‘x’ fret (ah ‘x’) and pick (with a pick, p or a).
Fret the note as shown, st‚ring but dig into the with the side of the thumb as you sound it with the pick.
Fret the note as‚shown, but sound it with a quick righthand tap at the fret shown (th17) for a harmonic.
a previously sounded note is touched above the fret marked tch (eg tch 9) to sound harmonic.