Lovato's second album, Here We Go Again, was released on July 21, 2009;she described its acoustic style as similar to that of John Mayer.The album received favorable reviews from critics who appreciated its enjoyable pop-rock elements, echoing reviews of Don't Forget.Lovato's first number-one album, it debuted atop the Billboard 200 with first-week sales of 108,000 copies.Before its release, she began her Summer Tour 2009.The album's lead single, "Here We Go Again" peaked at number 59 on the Billboard Hot 100 and managed to peak at number 15, becoming Lovato's highest peaking solo single at the time,The song peaked at number 68 on the Canadian Hot 100 and 38 in New Zealand.The album's second and final single, "Remember December" was a commercial failure, but it did peaked at number 80 on the UK Singles Chart.