[MysticCat]

Possible to be a member of both fraternities? Yes, generally speaking. Our prohibition is on being a member of another "secret national fraternal society in music." And since we're not a member of the NIC, there generally isn't a problem on the NIC fraternity's side. That said, there could be fraternity-specific prohibitions. Maybe FIJI's bylaws required a waiver or something?

The exception would be on those campuses where the Sinfonia chapter is a member of the IFC. In those cases, dual membership might be prohibited, or prohibited unless some kind of waiver is obtained. There are also campuses where the campus or chapter culture frowns on it.