Question: The lead vocalist of rock band Drug Restaurant is also a member of the cast of a South Korean variety show that airs on what network?
Related documents: [0]  [DOC] Jung Joon-young (born February 21, 1989) is a South Korean singer-songwriter, radio DJ, host, actor, and television personality. He first gained recognition in Mnet's reality television talent show, "Superstar K4" (2012), where he finished third place. In 2013, he became the youngest member of KBS's variety show "2 Days & 1 Night" Season 3. He hosted his own radio program titled MBC FM's "Jung Joon-young's Simsimtapa" (2014) and made his big screen debut in "Love Forecast" (2015). Since 2015, Jung is the lead vocalist of rock band Drug Restaurant, previously known as JJY Band, releasing their first album "Escape to Hangover" in May 2015 [END] 
[1]  [DOC] 2 Days & 1 Night (; also known as 1 Night 2 Days; abbreviated as 1N2D) is a South Korean reality-variety show that airs on KBS2 beginning August 5, 2007. "1 Night 2 Days" is one of the two segments (the other segment is "The Return of Superman") on "Happy Sunday", airing at 6:25pm KST once a week. The episodes are also uploaded with English subtitles weekly on YouTube through KBS's official channel. The show's current cast members are Kim Jong-min, Cha Tae-hyun, Kim Joon-ho, Defconn, Yoon Shi-yoon, and Jung Joon-young. The show's motto is "Real Wild Road Variety." Its main concept is to recommend various places of interest that viewers can visit in South Korea. Filming for every new trip is usually done 2 weeks prior to broadcast on KBS2. [END] 
Answer: 
KBS2
KBS2