Sexy, Free & Single (reissue name Spy) is the sixth Korean studio album of South Korean boy band Super Junior. It was released on July 4, 2012, by SM Entertainment, distributed by KMP Holdings and available from online music portal sites at midnight on July 1, 2012. It is their first album in 11 months following Mr. Simple released in August 2011. This was followed by the release of Version B on July 16, with a different cover which features the 10 members in their teaser photo makeup. A repackaged edition, re-titled Spy was released on August 6, with four new tracks including follow-up single "Spy".

This album marks the return of member Kangin, who was discharged from his mandatory military service in April 2012, and the first time with Super Junior in three years since October 2009; but the first one without Heechul, who enlisted in September 2011, and the last with leader Leeteuk and Yesung before their military service, enlisting on 30 October 2012 and on 6 May 2013, respectively. This is the third album that features ten of the 13 members from the group, following Bonamana in 2010 and their fifth album Mr. Simple.

The album won the "Album of the Year" in the 14th Mnet Asian Music Awards and "Disk Daesang" in 27th Golden Disk Awards. According to Gaon Album Chart, as of the end of December 2012, the album has sold a cumulative total of 510,000+ copies domestically.

On June 21, 2012, the first teaser photo, showing the theme of 'Beautiful men' was released, showing Eunhyuk in a white shirt, blue jeans, styled with a mullet-like hairstyle and blindfolded with white and pink flowers. This was followed by Donghae's teaser photo on June 22, with him dressed in a black mesh shirt with a white lace veil over his head. On June 23, the teaser photos of Leeteuk, with platinum silver hair, a gold necklace and heavy black eye makeup; and Ryeowook with red hair and feathers, were released. The following day on June 24, Yesung's and Shindong's photos were released, in which Yesung is partially bare chested with a crown of branches on his head and Shindong is frozen with light blue highlights in his hair. The teasers continued on June 25, with the release of Kangin and Sungmin's photos, showing a slim downed Kangin with a frosty look and a net-like veil over his head; and a side-profiled Sungmin with a feminized look and long blonde hair holding a large bouquet of baby’s breath flowers. On the same day Leeteuk also tweeted another version of his teaser photo with the same outfit but in a different pose leaning on his hand looking as he was in a deep contemplation. The final teasers displaying Siwon and Kyuhyun were released on June 26, showing Siwon with long blonde hair under a dip-dyed hat that matches his green eyebrows; and lastly Kyuhyun in a side profile looking upwards with a pale white gold face.

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