The latest revival of “Macbeth” on Broadway might be making headlines for its actors, Daniel Craig and Ruth Negga, but did you know this wicked play also incorporates some haunting tunes? "On Stage" host Frank DiLella introduces you to barrier-breaking musician Gaelynn Lea. After being born with brittle bones disease, rather than let it hold her back, Gaelynn chose to celebrate her disability as a form of diversity and lead a life of advocacy.