Penn Jillette and Teller were introduced to each other by Weir Chrisemer, and performed their first show together at the Minnesota Renaissance Festival on August 19, 1975. From the late 1970s through 1981, Penn, Teller, and Chrisemer performed as a trio called "The Asparagus Valley Cultural Society" which played in Petaluma, California at the Phoenix Theater. Chrisemer helped to develop some bits that continued, most notably Teller's "Shadows" trick, which involves a single red rose. The group disbanded in 1981 after Chrisemer quit show business, leaving Penn Jillette and Teller to work as a pair on a show called "Mrs. Lonsberry's Seance of Horror".