Originally Posted by: Jay Pham

But then I discovered that there are a lot of players doing the "advanced" version of it. On the 4th bar of the solo, they tend to replace one single note with a scale (I don't know if those were scales or just a bunch of random notes, sorry). For example

- https://www.youtube.com/watch?v=cIq57offgKE at 0:12

That's a group of notes in the D major scale (or relative B minor scale). The whole solo is in the key of D major (or B minor) until that nice modulation at the end to B-flat major. That particualr lick uses a couple of the D major pentatonic box shapes & quick alternate picking to cram all those notes in that small amount of time.

|-------------------------------------------------------------------------------------------|

|-------------------------------------------------------------------------------------------|

|---------------11-14-/s-16-14--------------------14-16-14-------------------------|

|------12-14------------------------16-14-s-12--------------------------------------|

|--14--------------------------------------------------------------------------------------|

|-------------------------------------------------------------------------------------------|

I cover playing the pentatonic major scale using quick alternate picking in these tutorials.

https://www.guitartricks.com/tutorial.php?input=722

That lick uses what I refer to as boxes 3 & 4 of the pentatonic major scale. You'll have to work on playing the notes using very relaxed & efficient minimal motions to get your alternate picking (up & down alternating) up to that speed. Be patient & practice a lot!

Hope that helps!