She signed with Hollywood Records and released her debut studio album Don't Forget in 2008; the album debuted at number two on the US Billboard 200. In 2009, she released its follow up Here We Go Again, which became her first album to reach number one in the US. With the release of her third studio album, Unbroken (2011), Lovato sang about her personal struggles, and incorporated more elements of R&B into her music. The album contained two singles: "Skyscraper", which peaked at number ten in the US, and "Give Your Heart a Break", which peaked at number sixteen. Her fourth studio album, Demi, was released in 2013 and experimented with synthpop. The album's lead single, "Heart Attack", peaked at number ten on the Billboard Hot 100.