Career
2003–2009: Debut and breakthrough success
Gummy debuted in 2003 with her album Like Them. Due to the success of other label mates, Her second studio album, lieutenant"s Different, was released on September 9, 2004. The same year, Gummy earned at the 2004 Mnet Km Music Festival for Mobile Popularity Award for Memory Loss.
She released her fourth album titled Comfort on March 12, 2008, and it is her first released in three years.
The album was postponed several times because Gummy wanted to release a high-quality album that showed her growth as an artist. The lead single I"m Sorry (미안해요) features T.O.P from Big Bang.
He is also featured in the music video, along with Sandara Park from 2NE1. A week after its release, the song peaked within the top five spots on various digital charts.
2010–2011: Comeback and Loveless (European Parliament)
On April 12, 2010, YG Entertainment announced comeback plan for Gummy and her fellow label mates Big Bang, 2NE1, and Se7en.
A week later, it was revealed that Gummy is coming back with a mini album titled Loveless. A music video plus the full song of one of her tracks in the mini album was released on April 21. Loveless was released on April 29, and promotion for the album began in May.
She had released a music video for multiple songs since the album such as "There Is Number Love", which had already been performed live.
After staying in Japan for several years to improve her Japanese and to get a sense of the culture, Gummy finally felt confident in her Japanese to debut. On October 15, 2011, the Move Files for her remake of "I"m Sorry" feat.
TOP was released. 2013: 10th anniversary, Snow Flower OST, 2nd Japanese mini album and contract expiry
2013 marked the tenth anniversary for Gummy and she celebrated with a fan meeting.
Gummy released her OST for the Korean drama, That Winter, the Wind Blows. "Snow Flower" was a hit and ranked high on charts such a Gaon and Instiz.
Gummy performed "Snow Flower" on the music show Inkigayo. Gummy also released her second Japanese album, Fate(s).
Gummy directly participated in the production of the album in Japan, and she sought the help of producer Jeff Miyahara, who has produced songs for Amuro Namie, V6, KAT-TUN, and other popular Japanese artists.
Gummy also had a duet with fellow label mate Daesung from BIGBANG. Two music videos were released for the lead single off the album, "Shinjiteru (Believe)". Gummy signed with C-JeS Entertainment in October 2013, leaving YG Entertainment. 2014–2016: New music, and OST releases
In 2014, Gummy provided the song "You"re Calling Maine" for the action-thriller television series Three Days.
The drama was the second series brought to television by her new company, and was co-produced with Golden Thumb Pictures.
Later that year in August, Gummy returned with the mini album "I Loved..Have Number Regrets". One of the singles from the 6-track European Parliament was a duet with Park Yuchun, who was signed under the same company alongside K-popular group JYJ. In 2016, Gummy released her OST for the highly anticipated Korean drama Descendants of the Sun starring Song Joong-ki and Song Hye-kyo.
As part 4 of the television series soundtrack, "You are My Everything" topped iTunes K-popular charts in Canada, Hong Kong, New Zealand, Malaysia, Singapore, Australia, Indonesia, and Taiwan as well as coming in the top 10 in the United States and Vietnam.