Career
Pre-debut
In addition, Yang has had a television appearance in Sharp 1 (반올림1. Banolim 1) as a cameo in between 2003 and 2005. He was also featured in its soundtrack entitled "Gray Sky" by Lee Hyun-jung.
MBLAQ
The group made their unofficial debut on October 9, 2009 and officially debut on October 15, 2009 during Rain"s Legend of Rainism concert, where they performed various songs from their then-unreleased single album Just BLAQ. Their performance that day was met with praise, with many concert spectators and fans considering them to be the next TVXQ. MBLAQ"s first single, "Oh Yeah", was released to the public through a music video on October 14, 2009 together with their debut single album, Just BLAQ. Afterwards, they had their broadcast debut on Mnet"s M! Countdown, performing their single.
The group also made their Japanese debut on May 3, 2011. They held an event at the Kanagawa Lazona Kawasaki Plaza, which gathered a reported 10,000 fans.
A day later, on May 4, they released their first Japanese album Your Luv. The album immediately reached first position at the Oricon Daily Charts, selling more that 11,000 copies.
The group has starred in various South Korean variety shows as guests.
They also had their own variety shows such as Mnet"s MBLAQ - The Art of Seduction, MBC"s MBLAQ"s Idol Army, Mnet"s Sesame Player and Korean Broadcasting System"s Hello Baby Season 5. Since their debut, MBLAQ has released three single albums, six extended play albums, one studio album, one repackaged studio album, and two EPs in Korean. They also released one compilation album, four singles and four DVDs in Japanese.
His fanclub is named: Seungholic
Other activities
Besides the group activities, Yang also guests on various television shows as a solo artist as well.
These include Super Junior Miracle, Idol Maknae Rebellion, Kara Bakery, and, Running Manitoba among others