Thanks horusfalcon, haven't listened to "The incomparable Wes Montgomery!" in ages.
The technique he uses, of adding the harmonic of the note he's playing, is achieved by going up the Fretboard two frets (a tone) - and across, or UP two strings. Plays same note, but second is an Octave higher. Very nice !
I've no idea why I like the RHCP's, except maybe because of their energy.
Looking at this Clip it's sad to see how deeply stuffed up John Frusciante (Guitarist) was, due to drug addiction, brought on by depression. He joined RHCP's at age 18 (in 1988) when their current Guitarist died from a heroin overdose. They were his favourite live band, could play all their songs.
Frusciante grew uncomfortable with the success of the band and left abruptly in 1992, in the middle of the album tour.
Frusciante later said that the band's rise to popularity was "too high, too far, too soon. Everything seemed to be happening at once and I just couldn't cope with it."
Frusciante, fresh out of drug rehabilitation, rejoined the band in 1998; he announced he was amicably leaving the band to focus on his solo career around 2009.