Violinist Sharan Leventhal has given more than 125 premieres as a soloist and as a founding member of Marimolin and the Gramercy Trio. Many of these have been recorded on New World, Newport Classics, Naxos, Parma, NorthEastern and Catalyst/BMG labels. She has been a frequent guest for the Boston Artists ensemble and Present Music, and also appeared as a violin soloist with many U.S. orchestras. Leventhal currently teaches at The Boston Conservatory and Brandeis University, and has served on the faculites of Michigan State, the Berklee College of Music and the Interlochen Arts Camp. She has given masterclasses on four continents, and is the founder and director of Play On, Inc., a nonprofit organization dedicated to promoting active participation in music making.

Eric Segnitz is a violinist, a composer/arranger, and a charter member of the Milwaukee, WI-based new music ensemble Present Music. His composition credits include plays, television, film and concert works (published by Hal Leonard). Mr. Segnitz's producing credits include work for the Albany, NorthEastern, LML, Dargason, Narada, Innova and New World labels. Orchestral experience includes many years of service for the Milwaukee Symphony, and he can be heard as a soloist on two recent premiere recordings: "Todo Buenos Aires" by John Adams/Astor Piazzola [Albany], and the Kamran Ince violin concerto "In White" [Innova]. He has shepherded the Kepler Quartet's Ben Johnston quartet-cycle project since 2002 as both producer and second violinist.

Upon graduation from Indiana University, Brek Renzelman was named the assistant principal violist with the Milwaukee Symphony Orchestra for the 1985-1986 season. After his next orchestral assignment in the viola section of the Atlanta Symphony, Renzelman decided to return to Milwaukee, where he served as the violist with Present Music from 1992 to 2010. In his freelance career, Mr. Renzelman has recorded with international soloists, acted as principal violist for the Milwaukee Chamber Orchestra, and performed in the Milwaukee Symphony viola section in long and short-term stints during the past two decades. He is also currently devoting time to social activism, and the publication of his first book.

Karl Lavine is the principal 'cellist of both the Madison Symphony and the Wisconsin Chamber Orchestra. He has freelanced and worked as a grant writer in New York City, toured Europe and Canada as a member of the Kandisky Trio, and performed an 18-month European tour of West Side Story. From 1999 to 2009 he served as the 'cellist for Present Music, and continues to perform regularly with John Harbison's Token Creek Festival. Mr. Lavine has held faculty positions at Iowa's Luther College, Illinois Wesleyan University, the University of Wisconsin-Whitewater and the National String Workshop. Lavine also maintains an active private teaching studio in Madison, WI, and is Director of the Chamber Music Program for the Wisconsin Youth Symphony Orchestra.