Or Matias served as the music director and conductor for Natasha, Pierre, and the Great Comet of 1812 on Broadway starring Josh Groban.

Or won an Obie Award for his music direction on Octet at the Signature Theater (NYC) in 2019. The show will receive its second production at Berkeley Rep in the spring of 2022

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Or music directed and played the role of Sergei Rachmaninoff in LCT3's production of PRELUDES, which earned him a Lucille Lortel Award nomination


Or music directed and conducted First Daughter Suite by Michael John Lachiusa at the Public Theater