Super Junior M Lawsuit And Lineup Changes

In December 2009, Han filed for contract termination from SM Entertainment, claiming that the provisions of his contract were unlawful, harsh, and against his rights. Super Junior-M immediately canceled all of their future activities and performances in China and Taiwan. They returned to Korea to begin preparing for Super Junior's fourth studio album. Han, however, stayed in China and signed under a new management, releasing his debut solo album Geng Xin in July 2010. Although Super Junior-M remained largely inactive for most of 2010, they won several accolades for their song "Super Girl" at China's 2010 MusicRadio TOP Awards, including Most Popular Group, Golden Melody Award (Top 15), and Best Composition.
In December 2010, the Seoul Central District Court ruled in favor of Han. However, SM Entertainment announced that they will file an immediate appeal to reverse the decision. In September 2011, Han and SM Entertainment officially came to a mutual agreement regarding Han's contract, closing the case. Although Han will not continue his exclusive contract with SM Entertainment,the agency has yet to release an official statement regarding his status in Super Junior and Super Junior-M.
In February 2011, Super Junior-M resumed their activities with two new members from the main group, Sungmin and Eunhyuk, with the release of EP Perfection. A track in the album, "Love Is Sweet" is written by Jay Chou with lyrics penned by Chou's lyricist, Vincent Fang. Perfection was first released in Taiwan on February 25, followed by a Korean release two days later in South Korea. Hong Kong, Singapore, and selected provinces of China released the album on March 4. It debuted at number 2 on Taiwan's G-music chart,and stayed on the chart for four weeks. The repackaged version of the album was released on April 29, debuted at number 2, and stayed on the chart for 10 weeks. In March 2011, Siwon and Donghae were cast as the main leads in the Taiwanese idol television drama Skip Beat!, a live-action adaptation of the manga of the same name. The drama is scheduled to premiere on December 18, 2011 on Formosa TV. Super Junior-M will perform the drama's opening theme "S.O.L.O.", and Donghae will write and perform the ending theme, "This Is Love" .Super Junior-M stayed in Taiwan for over two months to promote Perfection. The album won them several awards at the 2010 HK Asian-Pop Music Festival, including Best Song Performance and Best Stage Performance. They won Most Popular Group at the 1st Annual Global Chinese Golden Chart, and Best Group at the 2011 Singapore HIT Awards.
Musical styles
See also: Super Junior#Musical style
Super Junior-M's goal is to bring the Korean pop influence over to the Chinese market, re-representing the hits in Mandarin. Similar to the style of their main group Super Junior, Super Junior-M's music style falls into the category of mainstream pop, dance, and R&B. Dance pop songs with rock and hip hop influences are easily heard in their music, such as in "Me" and "The Moment", which contains guitar riffs and heavy bass sounds. Rap is not performed as often like the main group, but these influences can be heard in "The Moment" and also the rap remakes in "Don't Don" and "A Man In Love". Endorsements
Super Junior-M and Taiwanese singer Show Lo replaced Hong Kong entertainers, Nicholas Tse and Twins, for the 2008 summer season endorsement spots of Semir, a Chinese clothing brand.They were acclaimed to be sunny, young, and passionate; thus their image was suitable to endorse the brand.