Pamelia Kurstin has adopted an instrument at risk of becoming a historical curiosity and taken it to its next logical step.

The theremin, an electronic instrument which creates electromagnetic fields that produce sound when those fields are interrupted, was invented by Leon Theremin in 1918. It bears the unusual distinction of being the only musical instrument that doesn't require physical contact to be played. Though there have certainly been proficient players in the past, most notably Clara Rockmore, the instrument is most famous for its roles in science fiction soundtracks and the Beach Boys' "Good Vibrations."

By using delay pedals and other effects, Kurstin gives the instrument a new voice, even multiple voices. At her hand, the theremin has the depth of a small string ensemble. The improvisations she presented as a part of P.S.1's "Music for Winter Exhibitions" series were floating and lyrical, built on repetition and harmony; she played long, slowly unfolding pieces not far removed from the classical minimalism of Philip Glass.

Kurstin doesn't play with the high-pitched waver and warble with which the theremin is generally associated. Her playing builds from deep, resonant tones and midrange counter-melodies, with upper-register phrases only punctuating, not defining the music.

It's wonderful to hear the theremin freed from the novelties of oddity and comedic effect. Leon Theremin envisioned his invention as a serious performance instrument. In Kurstin's hands, it is.