Vanity Fair:

After receiving criticism for a Wall Street Journal op-ed Swift wrote last summer, about Spotify’s free-streaming service, Swift says she worried “people would say, ‘Why won’t she shut up about this?’. . . My fears were that I would be looked at as someone who just whines and rants about this thing that no one else is really ranting about.”

Swift says she consulted only one person before releasing the letter on the Internet. “I read it to my mom,” she says. “She’s always going to be the one. I just said, ‘I’m really scared of this letter, but I had to write it. I might not post it, but I had to say it.’ ”