The Delta Eta chapter of the Delta Omicron International Music Fraternity was active at the University of Wisconsin-Milwaukee from 1941 to 1998. The purpose of Delta Omicron is to create and foster fellowship through music at the collegiate level. The Delta Eta chapter, during its existence, was involved with musical performances, scholarship competitions, community service, and national and local meetings and conferences. The organization also recruited new members, planned activities, and performed initiation ceremonies and other ritual acts. Additional chapters in the region were established at Alverno College (Gamma Gamma), UW-Stevens Point (Alpha Alpha), UW-Oshkosh (Omicron Chi), UW-Whitewater (Omicron Phi), and the Wisconsin College Conservatory of Music of Milwaukee (Delta Epsilon).
