Remembering the days when he was teaching a bunch of young kids who grew into some of the finest guitarists of their generation how to play guitar, Joe Satriani focused on one of this most prominent students - Mr. Kirk Hammett of Metallica.
Satch tells Classic Rock Magazine: "Kirk was a great student. He was very eager to learn.
"His fingers moved great - and he had great taste in guitar players like Michael Schenker and Uli John Roth. He was completely musical.
"He'd been in Exodus, but all of a sudden got in this band, Metallica, and he disappeared for a few months then came back with a copy of 'Kill 'Em All.' Thrash metal songs had brand new chord progressions that had nothing to do with blues, Zeppelin or The Beatles.
"Kirk would come in and say, 'Check out this new song I have to solo over - what key is this in?' Often the song wasn't in just one key. I had to teach him to decipher the song's tonality, to understand the musical possibilities, and how to make his own decisions on what to play."
Describing Kirk as a "young kid full of talent and enthusiasm" and saying how "Hit the Lights" perfectly captured 'Tallica's sound at the time, Joe added:
"Kirk had just replaced another great guitar player, Dave Mustaine, and at first he took Dave's approach of playing blues rock over the progressions.
"As the Metallica records pile up you can hear Kirk working in more exotic scales, but every now and again he'll still play a solo that sits on top of the riff - the one from 'Sad But True,' echoes the early Kirk Hammett.
"Even after all these years his finger tone's still the same. He burst on to the scene with that sound and throughout Metallica's musical journey his solos come up big, thick and full of energy."
He concluded: "People are looking for that special thing that you can't put into a book, you have to curate that yourself - and Kirk's never lost sight of that."