Reviewed by Frank Scheck
When it premiered on Broadway nearly a dozen years ago, the musical <cite>Ragtime</cite> had the misfortune to be overshadowed by the juggernaut that was <cite>The Lion King</cite>. Despite winning Tonys for its book and score, the show didn't achieve the success it should have, and the fact that it was berthed in one of Broadway's biggest, least-inviting barns didn't help. The revival, after a run at Washington's Ke…