Another album track by Focus, the Dutch progressive rock group. This is a section of m the 23-minute song “Eruptions,” from the 1971 album Moving Waves. As in the excerpt from “Hamburger Concerto” shown previously, this passage highlights the brilliance of guitarist Jan Akkerman. Akkerman combined blues-based, classical, and jazz sounds with amazing finger dexterity (speed of playing) to create a unique sound that is both logical and emotionally moving. Note the powerful, blues-based main theme.