Celebrated pop star and former Doobie Brother Michael McDonald and Cape Breton fiddling sensation Natalie MacMaster take the stage.

This episode welcomes the celebrated pop star and former Doobie Brother Michael McDonald, whose Grammy-nominated album Motown went platinum. McDonald joins conductor Keith Lockhart and sings some of his biggest hits, including "I Can't Let Go" and "What a Fool Believes," as well as classic blockbusters from the Motown catalogue like "I Heard It Through the Grapevine." Then Cape Breton fiddling sensation Natalie MacMaster takes the stage and shares her special blend of bluegrass and Celtic music with the Boston Pops Orchestra.