Wes Montgomery Guitar Technique: How Did Wes Use Upper Structures in His Satin Doll Solo?

In the opening bars of his Satin Doll solo, Wes Montgomery plays the upper structure of each minor chord: an F major triad over Dm7, a G major triad over Em7. He keeps the same sound over the V chord, and when Am7–D7 arrives the Cmaj7 upper structure shows up. Eight bars show the whole system.