Moderators, who lead the individual groups, include Patrick Cook, Richard Engquist, Frederick Freyer, Nancy Golladay, and David Spencer.
Notable participants have included Lynn Ahrens and Stephen Flaherty, Clark Gesner, Amanda Green, Gerard Alessandrini, Bobb Goldsteinn, Edward Kleban, Michael John LaChiusa, Ethan Mordden, Robert Lopez, Kristen Anderson-Lopez, Jeff Marx, Alan Menken, Maury Yeston, Tom Kitt and Brian Yorkey.