Red, Swift's fourth studio album, was released in October 2012.[108] On Red, Swift worked with Chapman and new producers including Max Martin, Shellback, Dan Wilson, Jeff Bhasker, Dann Huff, and Butch Walker, resulting in a genre-spanning record that incorporated eclectic styles of pop and rock such as Britrock, dubstep, and dance-pop.[109][110] The album opened at number one on the Billboard 200 with 1.21 million sales[111] and was Swift's first number-one album in the UK.[112] Its lead single, "We Are Never Ever Getting Back Together", was her first number one on the Billboard Hot 100,[113] and its third single, "I Knew You Were Trouble", reached the top five on charts worldwide.[114] Other singles from Red were "Begin Again", "22", "Everything Has Changed", "The Last Time", and "Red".[115]