“In jazz music you have the freedom, you have the expression. You have the visceral and you have the intellectual. Everything can be expressed through jazz, and is expressed through jazz and through the medium of improvisation. This is the highest form of being able to create music.” Speaking at the opening press conference of this year's Copenhagen Jazz Festival, that definition of jazz from the 80-year-old saxophone colossus Sonny Rollins seems as self-contained and eloquent as any other I've heard.