In her "Forty Part Motet" she placed 40 speakers in 8 groups, each speaker playing a recording of one voice singing Thomas Tallis' "Spem in alium", enabling the audience to walk through the space and "sample" individual voices of the polyphonic vocal music. This work is now part of the permanent collection of the National Gallery of Canada in Ottawa, Ontario, Canada., the Museum of Modern Art in New York City, and of Inhotim in Brumadinho, Brazil. This work was presented at The Cloisters, September to December 2013, that museum's first presentation of contemporary art. The work was installed in the Fuentidueña Chapel, which features the late twelfth-century apse from the church of San Martín at Fuentidueña, near Segovia, Spain, providing a transformed acoustic experience.