Dr. Arnstein is well known in the Twin Cities area as a pianist and composer. He has often served as pianist and harpsichordist with the Minnesota Orchestra, and has accompanied many members of the Twin Cities' two main orchestras and college music faculties. A winner of international competitions in both composition and piano, he has toured the Midwest as pianist and composer-in-residence for the Sylmar Chamber Ensemble and currently teaches at Mount Calvary Academy of Music, the St. Paul Conservatory of Music and the Evergreen school for the Arts in Edina. He has performed many times at the Edinburgh Festival in Scotland, as both piano soloist and harpsichord soloist. His numerous CDs with violinist Michael Antonello have received enthusiastic reviews in Fanfare magazine.
He received his doctorate from the University of Wisconsin-Madison, his Master's from the University of Illinois-Urbana, and his Bachelor's from the Manhattan School of Music. His music is published by Mnduca Music Publications in the United States and by Spartan Press in Europe.
He also writes liner notes for music CDs, science articles for ehow.com, classical music articles for examiner.com, and, in his spare time, short stories and novels.