The commission comes as Waters' sixth book, The Paying Guests, was shortlisted for the Bailey's women's prize for fiction.
The pivotal scene shows a child being burned as waters lap reassuringly.
Pryce, now paired with Milo O'Shea as Waters, won a Tony as best featured actor.
Amos wrote in fire, "Let judgment run down as waters, and righteousness as a mighty stream".
Two other South American penguin species, the Magellanic and Humboldt, also suffer as waters warm.
Even as waters recede from some areas, new floods are affecting others, particularly in the south.
Then again, as Waters recognises, human nature will ensure that the bizarre continues to thrive, particularly among sexual subcultures.
The French environment minister, Ségolène Royal, said she feared more bodies would be found as waters recede in French villages.
That record was passed Sunday, as waters neared 60 feet, half a foot from their projected crest of 60.5 feet.
But forecasters warned that the storm was still strong and the could cause flooding later as waters surge.
Like The Final Cut, it is another concept album about war, but as Waters points out, he's been writing about that particular topic since 1968.
