In 2007, Jiwon was set to debut in the group called Five Girls under Good Entertainment with G.NA, Yubin (Wonder Girls), UEE (After School), and Hyoseong (Secret). However they disbanded before debuting due to their agency's finance problems.
Shortly after, Jiwon joined Core Contents Media to become a member of the upcoming group T-ARA. However she left before their official debut in 2009 despite recording a song and music video with them.
- Death Bell (2008)
- "What's Up" (2011)
- The Unit (2017-2018)
Music video appearances
- Shinhwa - "Once in a Lifetime" (2006)
- SG Wannabe - "Leaving Without Regrets" (2008)
- Kim Kyu Jong - "Yesterday" (2011)
- BOYFRIEND - "I'll Be There" (2011)