On February 9, an event was held at a cafe in Seoul to promote the singer's 20th-anniversary project '4 Flavors'. The singer commented, "I am such a lucky person. I had a lot of complaints while I was performing when I was younger. Thinking back now, I feel like it was luck to me."  She continued, "There aren't many singers who become popular from ad songs; however, it was different back then."

Park Hye Kyung mentioned, "Out of my entire song collection, 38 of them were featured in advertisements." Her new song "Nerd Girl" featureing Long: D was released recently. 

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