would never see Professor Theremin again. Her detailed “Theremin Notebook” contains schematics, specifications, and RCA part numbers for replacement tubes. Many of these spare parts are still stored at the Rosen House. During the 1930s and beyond, the theremin was becoming very popular in the United States and Europe. Lucie continued to maintain a very active performing schedule here and abroad. While other theremin performers preferred to play classical music, Lucie encouraged composers to write music specifically for the theremin and she commissioned many works by such composers as Edward Mates, Ricardo Valente, Jenö Szanto, Jenö Takács, Mortimer Browning, John Haussermann, and Bohuslav Martinü. Much of this original material is in the archives at Caramoor Center for Music and the Arts. In April 1950 the Rosens traveled to Europe for Lucie Rosen's third and last European tour, (her second tour took place in 1939) again crisscrossing the continent with performances in London, Amsterdam, the Hague, Zurich, Geneva, Rome, and Vienna. Her last concert took place in 1953 in Celina, Ohio. After his release from the Soviet camps, Theremin briefly took a teaching position at a music conservatory, but was soon expelled by the authorities. He contacted Lucie several times before her death in 1968, wishing to visit with her once more and show her his newest inventions, but it was not meant to be. When her beloved Walter died in 1951, Lucie dedicated herself to establishing the Caramoor Music Festival, determined to see it grow and thrive. Caramoor remains a destination for theremin scholars, historians, and artists who find our archives of Lucie's correspondence and original scores to be a valuable and comprehensive resource for their research. Programs Caramoor's offerings are primarily classical (the Orchestra of St. Luke's has been in residence there since 1979) and operatic. During the Caramoor Summer Music Festival, on Thursdays through Sundays from June to August, jazz, bluegrass and popular artists have performed as well. Concerts continue year-round presented in the Music Room. In 2005 the festival staged Joseph Schillinger's "First Airphonic Suite", with Lydia Kavina, great-niece of theremin inventor Leon Theremin, as the soloist on that instrument (Lucie Rosen, an enthusiast of the theremin, was an accomplished performer on it herself, and she and her husband were for a time Theremin's patrons. The center's collection includes some of her instruments, including a highly advanced one Theremin gave her shortly before leaving the U.S. in