f(x) · Soundtrack single · 2010
“More Charming By The Day (Original Soundtrack) Part.1” came in f(x)’s 2nd year since debut, among the 2nd-generation groups. In 2010 it sits in the stretch where “Nu ABO” sharpened what set them apart. It is an OST tied to a drama or film, and a digital release with no physical edition.

Release format, tracks, chronology and official videos.
f(x)’s “More Charming By The Day (Original Soundtrack) Part.1” is a Soundtrack single released on 2010-03-23 for Korea / global. Release 3 of 14 in the same market, following “Chu~♡” by 134 days. 2 tracks; title track: I Love You, I Love You; total duration: 6:48. Genre: Soundtrack. Label: Music Design, under license to Dreamus. 0 official videos; digital only.
All 2 tracks, with durations, title tracks, writing credits and official videos.
| # | Track | Duration | Credits | Videos |
|---|---|---|---|---|
| 1 | I Love You, I Love YouTitle track | 3:24 | Not confirmed | — |
| 2 | I Love You, I Love You (Inst.) | 3:24 | Not confirmed | — |
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