"ALW allowed Streisand to record 2 of Norma Desmond's big songs before the London premier of Sunset Boulevard. Patti was upset that Barbra unveiled these songs first so that she did not truly get to originate them."
I don't know if she mentions it in the book, but when tickets went on sale for Sunset Boulevard in London, when a person called the box office (or Ticketmaster or whoever was in charge of selling the tickets) if the caller was put on hold, they heard Barbra's recordings of the songs played as background music. Patti had every right to be mad about that.
However, I don't think Patti should have had the expectation of originating the songs. ALW's style was always to put the "hits" out to the public ahead of the show. His shows had concept albums. And of course years later, Boyzone released "No Mater What" to generate talk for "Whistle Down the Wind." That was ALW's style.
If anyone ever tells you that you put too much Parmesan cheese on your pasta, stop talking to them. You don't need that kind of negativity in your life.