Background: Eunhyuk was born Lee Hyuk-jae in Seoul, South Korea. He has an older sister Lee So-ra. Raised in a family that struggled financially, he was interested in street performing as a child. Inspired by the likes of H.O.T's Jang Woo-hyuk, Michael Jackson and singer-dancer Yoo Seung-jun, Eunhyuk trained himself at a young age.
Context: On 16 December 2011 Eunhyuk and Donghae released digital single Oppa, Oppa, where they first performed it at Super Junior's Super Show 4 Seoul concert on 19 November 2011. This marks the first release of their collaborations. The single was also released in Japanese with an original Japanese music video on 4 April 2012. On the day of its release, it reached number two on Oricon Daily Chart with 42,114 copies sold. While also preparing for Super Junior's first world tour Super Show 4, the pair held a fan meeting, Premium Mini Live Event, in support of the single on 11 April at Shibuya-AX, Tokyo.  Eunhyuk is MC for MBC every1's Super Junior Foresight, along with fellow members Leeteuk, Kyuhyun, Yesung and Shindong. From 23 March 2012, he took over as MC for the last three live shows of singing-survival program Great Birth 2, better known as MBC Star Audition, on MBC. As of the 10 April 2012 broadcast, following the change in MCs and the departure of Shindong from Strong Heart, the show was re-vamped with Leeteuk and Eunhyuk billed as two of the 'six-fixed guests'.  In June 2012, Eunhyuk reunited with his Super Junior bandmates for their sixth studio album, Sexy, Free & Single released on 4 July. On 21 June 2012, the first teaser photo of Eunhyuk was released showing him in a white shirt, blue jeans, styled with a mullet-like hairstyle and blindfolded with white and pink flowers. In October SM Entertainment and Hyundai partnered up to release the "Maxstep" featuring Eunhyuk and other SM artists Super Junior-M's Henry Lau, SHINee's Lee Taemin, EXO-K's Kai, EXO-M's Luhan and Girl's Generation's Hyoyeon. The group became the official dance unit; Younique Unit. The official cover of Zedd's Spectrum was released via SBS Gayo Daejeon held on December 29, 2012, with Eunhyuk featuring. The single was performed by the members of SM The Performance and also included Donghae, along with TVXQ's Yunho, Shinee's Taemin and Minho and EXO's Kai and Lay.
Question: Did he release any singles?
Answer: This marks the first release of their collaborations. The single was also released in Japanese with an original Japanese music video on 4 April 2012.

Background: The Wallflowers are an American rock band formed in Los Angeles in 1989 by singer-songwriter Jakob Dylan and guitarist Tobi Miller. The band has gone through a number of personnel changes but has remained centered on Dylan. After releasing their eponymous debut album in 1992, the Wallflowers released what would become their best-known and highest-selling album, Bringing Down the Horse in 1996, which featured songs such as "One Headlight" and "6th Avenue Heartache". They went on to release an additional three albums before going on a seven-year hiatus, beginning in 2006.
Context: In July 2004, the Wallflowers returned to the studio to record their fifth album, Rebel, Sweetheart. This time the band decided to record in Atlanta, Georgia, which is where their producer for this album, Brendan O'Brien, is based. O'Brien also contributed on guitar. Fred Eltringham joined the Wallflowers as their new drummer. Jakob Dylan wrote the songs, of which keyboardist Rami Jaffee has said: "What I did notice is that kind of upbeat song with some pretty scary lyrics." Dylan painted the album's cover art himself.  On October 14, 2004, the Warren Zevon tribute album Enjoy Every Sandwich: The Songs of Warren Zevon was released, on which the Wallflowers covered Zevon's 1978 song "Lawyers, Guns and Money." In promotion of the album, the Wallflowers performed "Lawyers, Guns and Money" on the Late Show with David Letterman with Zevon's son, Jordan, on October 12, 2004.  On October 31, 2004, the Wallflowers were flown via military transport plane to the USS John C. Stennis aircraft carrier in the middle of the Pacific Ocean to perform for the returning troops.  Rebel, Sweetheart was released on May 24, 2005, and was met with positive reviews. Despite widespread critical acclaim, Rebel, Sweetheart performed relatively poorly commercially, peaking at No. 40 on the Billboard 200. However, the first single from the album, "The Beautiful Side of Somewhere", hit No. 5 on AAA radio. The second single was "God Says Nothing Back". This was the first Wallflowers album to be released on DualDisc. On one side was the album, and on the other was a DVD that included exclusive performances and arrangements of some of the band's songs, as well as an interview with comedian Jon Lovitz. In promotion of the album, the Wallflowers did concerts for the Oxygen Custom Concert Series and PBS Soundstage. Around the time of the album's release, the band set out on what would be their last tour for two years. They were joined by Stuart Mathis on lead guitar. After 2005, the Wallflowers ended their relationship with Interscope Records.
Question: What did the band do
Answer:
Jakob Dylan wrote the songs, of which keyboardist Rami Jaffee has said: "What I did notice is that kind of upbeat song with some pretty scary lyrics.