Ivy League A Cappella—Princeton Nassoons Signature song.

The Princeton Nassoons are the oldest a cappella group at Princeton University and the fifth oldest collegiate a cappella group in the United States.

The Nassoons take their name from Nassau Hall, a U.S. National Historic Landmark building which was the site of an important British surrender to General George Washington that ended the Battle of Princeton on January 3, 1777. This building served as the nation's capitol and the meeting place of the Continental Congress in 1783. The news of the signing of the Treaty of Paris of 1783 that ended the Revolutionary War was first delivered to Nassau Hall.

The Princeton Nassons first performed at Princeton University in 1941 and are one of the world's greatest collegiate performance ensembles.

Nassau Hall today holds the administrative offices of the President of Princeton University and is the meeting place of the faculty and Board of Trustees.