Girls' Generation's new song "Mr.Mr" was produced by world renowned producer team The Underdogs.

SM revealed on the 12th, "'Mr.Mr' is a charming dance song with an R&B sound. It's a work by The Underdogs, who also worked with Beyonce, Justin Timberlake, Chris Brown, and other famous pop stars. This was Girls' Generation and The Underdogs' first joint project together."

Girls' Generation announced their comeback on the 11th with a teaser image, quickly becoming the number 1 search query on several portal sites. Not only that, the group is being highlighted by Billboard in great anticipation for their new album.

On February 11th Billboard published an article that introduced the group's "Mr.Mr" teaser image in detail. They wrote, "The outfit's 'I Got a Boy' video earned [over] 85 million YouTube views as well as won the group Video of the Year at the inaugural YouTube Music Awards, where it competed against the most watched and shared videos of the year from Justin Bieber, One Direction, Miley Cyrus and more." They continued, "The new single will also prove whether the act can garner enough U.S. views to chart on the Billboard Hot 100 after the chart added YouTube views to its formula." The also wrote, "Anticipation is high to see what the group can accomplish after an exciting 2013."

Girls' Generation's new mini album Mr.Mr will be released on the 24th, and the title song will be released on the 19th.