This is the climax of the movie 1986 movie “Crossroads” (IMDb link here). If you are interested in seeing this excellent movie staring the Karate Kid (Ralph Macchio) as a young guitarist on an adventure into the world of blues mythology, you might want to rent it before viewing the video below. [I have no idea why Britney Spears made a movie with the same title.]
In this duel, a young Steve Vai uses his shredding skills against Ralph Macchio’s bottleneck blues style (composed and recorded by Ry Cooder). A great piece of music, and a great duel between two very different styles of playing.