"Go on and try to tear me down. I will be rising from the ground like a skyscraper." Demi Lovato made that musical vow in 2011 when she released "Skyscraper," the lead single off of her third studio album, Unbroken. The emotional track marked a public shift in the then-18-year-old's personal life as she turned her back on years of living like a self-described "nightmare.