Michael Esper, John Gallagher, Jr. and Stark Sands were on hand to perform "Wake Me Up When September Ends."
Broadway Week continues April 27 with a performance from Hair followed by Promises, Promises on April 28, La Cage Aux Folles on April 29 and Come Fly Away on April 30.
Here is a look at their appearance:
American Idiot Performs on "Regis and Kelly"
"LIVE! with Regis and Kelly" airs on ABC at 9 AM EST.