Harvard's student paper, The Crimson, covered this story in the February 3, 2003 issue in an article by Jeslyn A. Miller. According to that article the three groups that will be presenting are Alpha Phi, Delta Delta Delta and Kappa Kappa Gamma. The story is available through the archives on The Crimson's web site, and this link should take you to it
http://www.thecrimson.com/article.aspx?ref=269508