Benzel collaborated with Mike Kelley on the scores and soundtracks to Kelley’s installations "Day is Done" at Gagosian Gallery, New York, "Profondeurs Vertes" at the Musée du Louvre, Paris, and Kelley and Michael Smith’s "A Voyage of Growth and Discovery" at the Sculpture Center, New York and West of Rome, Los Angeles. With Kelley, he composed and produced "Judson Church Dances", a live performance of the music of "Day is Done" with Kelley at Judson Church for Performa 09, New York.