PositiveWall Street JournalIt is based on interviews with some 40 people who worked on the show, Mr. Sondheim foremost among them, and all are forthright and revealing, as well as amusing ... Putting It Together is the richest backstage memoir I know that concentrates on the work itself. If you want to learn what it’s like to put on a professional show, Mr. Lapine’s book tells pretty much everything ... Best of all are the conversations in which Mr. Lapine and Mr. Sondheim admit you to their workshop, sharing memories that illuminate their creative process like a flash of lightning.