Sandi-Jo Malmon (cello) is an active chamber music and orchestral performer. She made her Lincoln Center debut in 1991 as a founding member of the Boston Quartet.  A founding member also of the Kaleidoscope Chamber Music Ensemble, she has appeared in concert at various venues around New England, in the Midwest, on the eastern seaboard and in Europe.

Ms. Malmon has been a member of the Lake George Opera Festival Orchestra since 1997 and has recently joined the Aryaloka String Quartet. She is currently an adjunct professor of cello at Northeastern University.

Ms. Malmon has recorded for numerous documentaries and PBS series including the NOVA series about “The String Theory” and can be heard on Blue Hill Records, North Star Records, Lakewest Records, and Pamet River recordings.

Ms. Malmon is the Librarian for Collection Development at the Loeb Music Library at Harvard University.

Guy Urban (piano) teaches at Wheaton College and performs regularly throughout New England. He has also been on the faculties of the New England Conservatory and Wellesley College. He served for twelve years as the orchestral pianist for the New Hampshire Symphony Orchestra. He has conducted the Quincy (MA) Orchestra and the orchestras of Wellesley and Wheaton Colleges. He also plays keyboards in the rock band Speed Hump.

Beth Welty (violin) is a founding member of Kaleidoscope. In 1991 she made her Lincoln Center debut with the Boston Quartet, of which she was also a founding member. She has performed with numerous groups in the Boston area, including the Boston Classical Orchestra, the Handel and Haydn Society, and the Pro Arte Chamber Orchestra. She has performed abroad with various organizations, touring Italy with the Chorus of Westerly and South Africa with the London Chamber Players. She toured Spain twice as concertmaster of the Massachusetts Symphony.  She has been concertmaster of the Nashua Chamber Orchestra since 2005.