“The Social Network” takes its first award of the evening, with Trent Reznor and Atticus Ross winning best score over Andre Desplat of “The King’s Speech,” Danny Elfman (“Alice in Wonderland”), A.H. Rahman (“127 Hours”) and Hans Zimmer (“Inception”).

Murdered publicist Ronni Chasen gets a shout-out from Diane Warren, who wins best song for “You Haven’t Seen the Best of Me,” one of two nominated numbers from “Burlesque.”