Critical reception , September 2011 "Here We Go Again" received generally positive reviews from music critics.
The Arizona Republic Ed Masley referred it to as "an explosion of pop hooks delivered with a winning blend of heartache and bravado". Kerri Mason of
Billboard called the song a potential hit single and noted that Lovato "almost sounds like Kelly Clarkson's kid sister". Margaret Wappler of
Los Angeles Times compared it to Clarkson's "Since U Been Gone" and wrote that Lovato "tells a guy where to stick it over buff guitar lines".
Stephen Thomas Erlewine of
Allmusic called the album "not quite as much fun" as ''Don't Forget'', "but still fun, particularly when Lovato tears into hooky power pop like 'Here We Go Again'." while
Houston Chronicle critic Joey Guerra described it was not as "immediate a grabber" as Lovato's previous singles.
Chart performance In the United States, "Here We Go Again" debuted on the
Billboard Hot 100 at number 51 on July 11, 2009. After two weeks on the chart, it fell to number 66, before rising to number 24 the next week, in addition to being named the "greatest digital gainer". Coinciding with the release of the parent album, the song peaked at number 15 on August 8, 2009. In Canada, "Here We Go Again" debuted at number 86 on July 11, 2009, of the
Canadian Hot 100. It fell off the following week, and re-entered on August 8, 2009, at number 61, which became its peak position. In New Zealand, the song entered and peaked at number 38, becoming Lovato's first entry on the chart. ==Music video==