Rihanna's got a brand new single from her forthcoming seventh album (as yet untitled) and, despite the fact that the accompanying photo seems to suggest that "Diamonds" will be about RiRi smoking joints that cost more than most people's houses, the track is actually pretty PG.  A slow, mesmerizing tempo (a club jam, this isn't) complements empowering, slightly self help-y lyrics -- like the catchy hook "shine bright like a diamond" that Rihanna repeats over and over, automaton-like -- before briefly picking up the pace to let the singer's vocals soar.  Listen to the song below and don't blame us if you keep repeating "shine bright like a diamond" in your head all day.