This video shows how we are all ‘conditioned’ to music. How we know more than we realize or think.
You’ll see he uses movement (jumping across the stage) to associate with steps of the pentatonic scale. Try singing along with the audience. You may be very surprised at how accurate you are.
This idea relates to ‘intervals’ on the fretboard. I.e., the distance from one note to the next. Note how he jumps over some notes to create a wider gap?
Why not play along on guitar as well… it should be relatively easy to figure out the notes along one string. Using one string will allow you to associate his ‘stage’ jumps with jumps you make along one string when playing the pentatonic scale.
I suggest it is the Db major/Bb minor pentatonic. He starts off with a couple of notes that are different. But it’s Db major pentatonic when he gets into it.