Eastman owns a fine art harmonium built by the French firm Mustel, something of a Rolls-Royce of 19th-century harmonium builders: while rival firms produced hundreds of instruments per year, Mustel typically produced less than a dozen. There is a significant amount of repertoire from fin-de-siècle France specifically for the harmonium, and practicing works for organ by composers such as Franck on the harmonium provides tremendous insight into this music. The instrument was donated by alumni Keith Reas and John Sheridan.