On ‘Triptych I, II & III,’ Ivo Perelman and Matthew Shipp never, ever wander aimlessly trying to figure out what to play next. It all comes out naturally and it comes in the form of actual melodies, even if those melodies are constantly shifting and mutating.

When you listen to any of the dozens of records that Perelman and Matthew Shipp have made over the years, you can understand why this communion deserves a box set kind of celebration. And ‘Procedural Language’ is yet another reason to celebrate.

Ivo Perelman and Matthew Shipp continue to relentlessly push the envelope after all these years.