Sia’s songs have a certain archetypal character: spurned lovers feeling out the space between their needs and desire; distressed romantics seeking the salvation of sunrises and barstools; frail, self-possessed heroines steeped in their own idiosyncrasies. The former Zero 7 frontwoman is primarily known for her own hits at this point, but she’s written for some of the biggest pop stars of the past two decades, and this collection highlights, what Time feels, are the greatest performances of her songbook. It’s ranked (from top to bottom), which means that this is intended as more of a subjective conversation piece, but it still feels cohesive.