To my ears, Dinosaur Jr’s sound with 3 people is already very full and complete; there’s already a big wall of sound, so the addition of this bright, reedy, invasive loud saxophone, loud backup vocals, etc. doesn’t improve anything.
That said, I’d like to hear Ornette Coleman, Didier Malherbe, David Boyce, John Yi, Karl Denson, and/or the saxophone players from Xhol Caravan, play Out There with Dinosaur Jr; this saxophonist in this context not so much. I’ve liked David Sanborn’s playing okay in other settings if that’s who’s playing here, but the sax here is fairly unappealing–abrasive, unmelodic, crowded, tense, noisy, and not in a good way.
Though it’s still a pretty great performance/clip in spite of the all-star band feel, fun to watch Murph play air drums with his feet.