The Detroit Partnership, Relay For Life, U-M Stars for the Make-A-Wish Foundation, InnoWorks at the University of Michigan, SERVE, Letters to Success, PROVIDES, Circle K, Habitat for Humanity, and Ann Arbor Reaching Out. Intramural sports are popular, and there are recreation facilities for each of the three campuses. Fraternities and sororities play a role in the university's social life; approximately seven percent of undergraduate men and 16% of undergraduate women are active in the Greek system. Four different Greek councils—the Interfraternity Council, Multicultural Greek Council, National Pan-Hellenic Council, and Panhellenic Association—represent most Greek organizations. Each council has a different recruitment process. The Michigan Union and Michigan League are student activity centers located on Central Campus; Pierpont Commons is on North Campus. The Michigan Union houses a majority of student groups, including the student government. The William Monroe Trotter House, located east of Central Campus, is a multicultural student center operated by the university's Office of Multi-Ethnic Student Affairs. The University Activities Center (UAC) is a student-run programming organization and is composed of 14 committees. Each group involves students in the planning and execution of a variety of events both on and off campus. The Michigan Marching Band, composed of more than 350 students from almost all of U-M's schools, is the university's marching band. Over 125 years old (with a first performance in 1897), the band performs at every home football game and travels to at least one away game a year. The student-run and led University of Michigan Pops Orchestra is another musical ensemble that attracts students from all academic backgrounds. It performs regularly in the Michigan Theater. The University of Michigan Men's Glee Club, founded in 1859 and the second oldest such group in the country, is a men's chorus with over 100 members. Its eight-member subset a cappella group, the University of Michigan Friars, which was founded in 1955, is the oldest currently running a cappella group on campus. The University of Michigan is also home to over twenty other a cappella groups, including Amazin' Blue, The Michigan G-Men, and Compulsive Lyres, all of which have competed at the International Championship of Collegiate A Cappella (ICCA) finals in New York City. Compulsive Lyres are the first and only group from Michigan to claim an ICCA title, having won in 2002. The Michigan G-Men are one of only six groups in the country to compete at ICCA finals