Spotify, the Swedish music streaming behemoth that Slate’s Farhad Manjoo called “The World’s Greatest Music Service,” came to the US last week, boasting an impressive library of over 15 million songs. Before you sign up, though, you may want to know whether or not these are the right 15 million songs—not just a few Katy Perry tracks backed by remixes of Gregorian chant.

Law professor Jonathan Turley wrote an op ed in the New York Times yesterday asking for the right to privacy for polygamist families. He represents one, the Browns, consisting of a husband, four wives, 16 children, and the production crew of TLC who films them for the reality series Sister Wives. Turley, smartly, is not seeking to get all four “marriages” recognized; he is arguing that consenting adults have a right to form the family structure they like and that as long as there is no coercion or child abuse, being polygamists is none of the state’s business. After all, John Edwards, who made a multiple family on the sly, may be morally repugnant, but he is not in legal trouble for impregnating a woman who wasn’t his wife. Turley makes a persuasive argument, and he notes that civil liberty organizations have been reluctant to back him, probably because his cause seems to undermine the case for gay marriage. As Turley writes: “The reason might be strategic: some view the effort to decriminalize polygamy as a threat to the recognition of same-sex marriages or gay rights generally.”