The National Gallery <a href=" http://www.neighborsforpeace.org/?jonathan-livingston-seagull-essay ">sociology essay on race and ethnicity</a> That’s not the vibe you expect from Marc Blitzstein’s 1937 punch-in-the-gut musical about haves vs. have-nots, “The Cradle Will Rock.” But there is nonetheless an unmistakable feeling of posh celebration at City Center’s impeccably performed and richly satisfying concert-style revival of this storied — but seldom seen — show.