As a pianist, Seth Rudetsky has played for more than a dozen Broadway shows, including "Ragtime," "Les Miserables" and "Phantom of the Opera." Listeners to Sirius/XM's On Broadway channel know afternoon host Rudetsky, also the hose of "Seth Speaks" on Sirius/XM Stars, is obsessed with Broadway.He's bringing his “Seth’s Big Fat Broadway Show,” a live, one-man multimedia deconstruction of Broadway’s smash successes and hilarious blunders, to the Kentucky Center Saturday evening.WFPL’s Erin Keane spoke with Rudetsky about musical theater trends, "Glee" and his Broadway obsessions (good and bad).{description}