I have heard a lot about natural harmonics, what are they, what's the difference to artificial ones?
Natural harmonics, on guitar in particular, are those found using open strings. The most used ones are those on 12th fret, 7th fret and 5th fret - or the same places nearer the pups - as in 1/2 the open string, 1/3 and 1/4 of it.
Artificial harmonics are those found using fretted notes. A straightforward example would be when one frets the 1st fret on, say, the top string. That's an F. The first artificial harmonic of that will be touching over the 13th fret, to give an octave F. Then touching over 8th fret will give the second harmonic of C, and touching over the 6th fret will give another F, an octave higher. That's artificial harmonics.
With some practice, the touching can be done with a digit from the picking hand - the other is busy lower down - and is getting very close to pinched harmonics - probably the next stage.
The only difference between the two is:
- Natural harmonics are played on an open string. They do not require the left hand to stop the string at any fret; if they did, they'd be...
- Artificial harmonics are the same, but they can be on any fret (you'll need to use your right hand to touch the string AND to pluck while the left hand frets the note).
The two names describe the same sound; the label only actually differs to signify the change in technique.