Philip Glass has written music for dozens of films, including "Mishima", "Koyaanisqatsi", "The Truman Show", and "The Illusionist".

I believe the soloist here is Glass himself.

https://youtu.be/M73x3O7dhmg

Description from YouTube:

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Published on Dec 1, 2016

Philip Glass - Metamorphosis (1988)
I made this record using an old amazing (one of my favorite instrument actually) Steinway & Sons model O grand piano. (Steinway officially stopped production of the Model O in 1924, but I guess this one was built around 1925-1926 according to serial number)

"Metamorphosis One" – 00:00

"Metamorphosis Two" – 06:54
"Metamorphosis Three" – 13:59
"Metamorphosis Four" – 19:09
"Metamorphosis Five" – 26:29
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"Metamorphosis", refers to and was inspired by the 1915 short story The Metamorphosis by Franz Kafka. While all pieces were written in 1988, some were written for a staging of Metamorphosis, while others were for a documentary film called The Thin Blue Line directed by Errol Morris.
"Metamorphosis One" is played in an episode of Battlestar Galactica by Kara "Starbuck" Thrace. Within the narrative, her father composed and performed the piece. It is also played in the series finale of Person of Interest, Return 0. "Metamorphosis Two" formed the basis of one of the main musical themes in the film The Hours. It is also the song that the American rock band Pearl Jam uses as their introduction music to concerts.
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