2006-2008: Show! Music Core and solo debut with The Brian In May 2006, Joo became a co-host of
Show! Music Core alongside actress
Jang Mi-inae. Later that year, he won the Popularity Award at the 2006
MBC Entertainment Awards for his work on the show. Joo released his debut solo album,
The Brian, on December 18, 2006. The album incorporated diverse genres such as
soul and
jazz. With the album, Joo said he hoped to gain more respect as an artist, rather than being known as "Fly to the Sky without
Hwanhee". He described one of his motivations for making a solo album: The album debuted at #7 on the monthly Recording Industry Association of Korea album chart and sold 15,376 copies by the end of December. The album's lead single, a ballad titled "Don't Go", topped various South Korean real-time music charts upon its release While promoting the album, Joo was diagnosed with
vocal cord nodules and had to adjust his schedule to avoid further injury. Joo left his position on
Show! Music Core in November 2007 to focus on overseas promotions.
2009-2012: Manifold, Unveiled, and musical theater On December 10, 2009, Joo released his second solo album,
Manifold, which sold 15,000 pre-order copies. The album was a departure from Joo's earlier work and featured
hip hop and
dance music songs, including the lead single "My Girl" featuring hip hop duo
Supreme Team. Joo signed an exclusive contract with
Jellyfish Entertainment in October 2010. On April 7, 2011, Joo released his first mini album,
Unveiled, including for its lead single an emotional ballad titled "Love Is Over Now".
Unveiled debuted at #7 on the
Gaon Album Chart. To promote the album, Joo went on a solo tour of the United States in June 2011 with stops in Seattle, Atlanta, Los Angeles, and New York. Upon returning to South Korea, Joo made his musical theater debut in August in a Seoul production of
Rent, in which he played the role of Mark. In 2012 at the Shrine Auditorium in Los Angeles, California, Joo performed as a principal cast member representing the Korean culture in a
Broadway-style musical called Loving the Silent Tears and based on
Supreme Master Ching Hai's poetry collection to commemorate the 19th Anniversary of Supreme Master Ching Hai Day. == Discography ==