What form of theater do Sean Pol McGreevy and Mack and Mabel have in common?
Sean Pol McGreevy Sean Pol McGreevy (born 11 January 1980) is an Irish actor, singer, composer and musical director best known for Musical Theatre and singing/playing piano in the West End of London. Notable roles include, Mark in Jonathan Larson's "Rent" 2000, Frank Capra in "Mack and Mabel" London 2008 and JJ Brown in "The Unsinkable Molly Brown" London 2009.
Mack Swain Mack Swain (February 16, 1876 – August 25, 1935) was an American actor and vaudevillian, prolific throughout the 1910s, 1920s and 1930s.