Popular music's queer DNA is inarguable, from Little Richard's "Tutti Frutti" to David Bowie's Ziggy Stardust, from cross-dressing Kurt Cobain to "female Elvis" k.d. lang. Regardless, gay and lesbian performers have preferred the safety of the closet for generations, mainly due to the tenuous legal status of homosexuality and the rife homophobia that lives on in spite of the victories of Gay Liberation. Only in 2014 did an 'out' gay pop star, Sam...