Rolling Stone has a nice Q&A with Trent Reznor, who recently showed up at the Oscars in a Prada tuxedo and took home the award for best score.
What music do you play for your son?
Mainly just piano: Bach, Beethoven and Mozart, a little Chopin. And recordings of womb sounds and clothes dryers to help him sleep. He will probably love David Lynch films. Right now the nursery sounds like Eraserhead [laughs].
One can only hope a "Closer" opera is coming soon.