Young-hu Kim and Shinwa both have worked for what music company?
Young-hu Kim Young-hu Kim is a South Korean music producer and songwriter. He works mainly with SM Entertainment artists, and has written songs for Girls Generation, Exo, TVXQ, BoA, Shinee, f(x), Super Junior, Shinhwa, and Fly to the Sky.
Duble Sidekick Duble Sidekick (Hangul: 이단옆차기 ; RR: "Idanyeopchagi " ) is a South Korean music producer and songwriting team made up of lyricist Park Jang-geun and composer Kim Jung-seung (also known as Michael Kim, Mikey, and Chance of One Way). The duo was formed in 2010, and rose to fame after producing MBLAQ's album "100% Ver." (2012). Since then, they have produced many hit songs. In late 2012, they expanded their team to include more composers and started their own entertainment agency called Duble Kick Entertainment. Wellmade Yedang became the agency's largest shareholder in May 2014.