1st and 2nd mvts, Yuka Beppu - Machiko Syojy
3rd mvt, Kaede Tomita - Yui Hirao
4th mvt, Yuki Osaki Mayu Wakakuwa
I just can't stop smiling when I hear this and see the young women and men playing this music. I think this was the symphony which, after hearing Brahms and another pianist playing it some idiot of a music critc said the experience was like being beaten by some kind of very sophisticated thugs. Which only shows how stupid some critics can be in the face of greatness.
The video notes say it was arranged by Brahms and (Robert) Keller. I don't know if it is a revision of Brahms' original 4-hand arrangement or if it is another transcription. I'm too groggy from cold meds to read through the scores to see. Robert Keller made a large number of piano and piano 4-hand transcriptions for Brahm's publisher Simrock, I believe in Brahms' case with his approval. It's long been a way for musicians to hear and play music they would almost certainly never get a chance to conduct. There is nothing like playing one of these as a way of getting to know music more intimately than just listening to it can. Most people who play these do so, in private.