VIDEO: ALL THE WAY's Bryan Cranston Shares Advice from Audra McDonald on 'Letterman'

Bryan Cranston stopped by last night's Late Show with David Letterman and spoke about maintaining his voice throughout the grueling eight shows a week schedule of his new Broadway play All the Way, in which he portrays President Lyndon B. Johnson.

"It's a three-hour play," he explained, "so I talked to a wonderful actor, Audra McDonald, she did Porgy and Bess, and she told me that her Ear, Nose and Throat said, 'shut down on Mondays, don't say anything on Mondays.' So I started Silent Mondays!"

Check out clips from the appearace below!

All the Way, the new play by Pulitzer Prize-winning playwright Robert Schenkkan, starring BREAKING BAD's Bryan Cranston, opened on March 6, 2014, on Broadway at the Neil SimonTheatre. The play is directed by Bill Rauch, Artistic Director of the Oregon Shakespeare Festival, where All the Way began its theatrical life. BroadwayWorld brings you photos from the opening night curtain call below!

All the Way stars Cranston (Lyndon B. Johnson), Eric Lenox Abrams (Bob Moses), Betsy Aidem(Lady Bird Johnson), J. Bernard Calloway (Ralph Abernathy), Rob Campbell (Governor George Wallace), Brandon J. Dirden (Martin Luther King, Jr.), James Eckhouse (Robert McNamara), PeterJay Fernandez (Roy Wilkins), Christopher Gurr (Senator Strom Thurmond), William Jackson Harper (Stokely Carmichael), Michael McKean (J. Edgar Hoover), John McMartin (Senator Richard Russell),Christopher Liam Moore (Walter Jenkins), Robert Petkoff (Senator Hubert Humphrey), Ethan Phillips(Stanley Levison), Richard Poe (Senator Everett Dirksen), Roslyn Ruff (Coretta Scott King),Susannah Schulman (Lurleen Wallace), Bill Timoney (Senator Karl Mundt) and Steve Vinovich (Rep. Emanuel Celler).

All the Way takes audiences behind the doors of the Oval Office and inside the first year of Lyndon B. Johnson's presidency and his fight to pass a landmark civil rights bill.