Musical Master said: "What kind of errors?"
From one reviewer on Amazon:
I’m not quite a third of the way into this, and I'm disappointed. This is a subject that interests me, but I can't have any faith that Kennedy has his facts straight, because there have been serious mistakes in parts that I know something about. If you're going to quote a lyric from a show, get it right! In a song from "Finian's Rainbow," it's not "When I can't fondle the hand I'm fond of/I fondle the hand I'm near"; it's "I fondle the hand at hand."
Then in writing about "Funny Girl," he says Stephen Sondheim came on as lyricist; he didn't. Sondheim was approached to do it, but refused. The actual lyricist, Bob Merrill, isn't mentioned at all in the six pages Kennedy devotes to "Funny Girl." It's not like Merrill was some unknown -- he'd already had three hits as a composer-lyricist -- or that his involvement was a secret. Kennedy notes that Barbra Streisand dominates the cast album (which she does), and right there on the front it says "Lyrics by Bob Merrill."
Later he covers "Goodbye Mr. Chips" and tells of lyrics by Dory Previn that cause her and husband André Previn to be released from the picture. He quotes them: "He smiled...I smiled...we smiled/And the sky smiled, too/We talked...he talked...I talked.../And the sky was blue." Problem is, those lyrics, whatever you think of them, are by Leslie Bricusse, not the Previns -- and are in the finished film (Song: "And the Sky Smiled"
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When the author is making this kind of elementary mistake, how much can I trust him on areas where I know nothing and so am depending on him to get it right?