You'll Walk Out Humming "The Gentle Hum of Anxiety"

The soundtrack to “The Social Network,” created by Trent Reznor and Atticus Ross, will go on sale digitally on Sept. 28 and in other formats shortly thereafter, and it doesn’t sound like it will do anything to brighten the dark portrayal of Facebook’s Mark Zuckerberg. Reznor describes the music as “electronic in basis, but mostly organic sounding. Lots of experiments and emphasis on sound fraying around the edges….” Among the 19 tracks: “Hand Covers Bruise,” “It Catches Up With You,” “On We March,” “The Gentle Hum of Anxiety” and “Soft Trees Break the Fall.”