Satch Boogie is the fifth track from Joe Satriani's 1987 album "Surfing With The Alien". The piece is a hard driving rock boogie in shuffle time. The solo is a mixture of A pentatonic blues and Dorian mode, the chord sequence is: A D F# A. The tapping solo uses Satriani's signature Pitch Axis Theory composition style, the central pitch in this case is A and the broken chords revolve around this note.