Don Pullen, who bridged free and mainstream jazz, "had a technique of rolling his wrists as he improvised—the outside edges of his hands became scarred from it—to create moving tone clusters," writes critic Ben Ratliff. "Building up from arpeggios, he could create eddies of noise on the keyboard...like concise Cecil Taylor outbursts." In the description of Joachim Berendt, Pullen "uniquely melodized cluster playing and made it tonal. He phrases impulsively raw clusters with his right hand and yet embeds them in clear, harmonically functional tonal chords simultaneously played with the left hand." John Medeski employs tone clusters as keyboardist for Medeski, Martin, and Wood, which mixes free jazz elements into its soul jazz/jam band style.