Not only is this one of the best band-written songs of all time, the solo is one of the best ever written and of course Steve Lukather plays it perfectly! Using a combination of great melody, super fast licks and beautiful bending, this is a great solo for any guitar player to learn.
The whole solo is built around the key of F major, and Steve Lukather uses the F major scale and F major pentatonic across the fretboard to play this solo. Every lick is based around those shapes, and Ollie demonstrates which scale each lick is in as he walks through the solo in the video. for your reference, here are the F major and F major pentatonic shapes across the neck!
For the very quick lick we are using a couple of out notes as well as the usual pentatonic and full-scale shape 1. The way Steve Lukather uses these 'out notes' is to slide from them into the scale tones. It sounds fantastic and adds a real twist to the sound. The actual out notes he is using a remore commonly called the 'blue' notes and are from the blues scale. Here are the shapes:
You've now completed and taken a huge step forwards in your guitar playing journey. Feel free to bask in glory for a while, or go ahead and try another course if you're hungry for more.