Final answer:
Ornette Coleman explored musical freedom by intentionally altering intonation and playing 'out of tune' for effect, similar to avant-garde techniques used by Arnold Schoenberg and John Cage.
Step-by-step explanation:
The student's question refers to the revolutionary musical techniques of Ornette Coleman, a saxophonist known for his work in the genre of jazz. Coleman is noted for his avant-garde approach to musical conventions, which included moving intonation around and purposefully playing 'out of tune' for expressive effect. This technique is part of a broader movement in music where artists like Arnold Schoenberg and John Cage challenged traditional musical structures with atonality, dissonance, and chance-based compositions.