In this clip Tae-yeon, the leader of SNSD (na na na na na na na na Leader :) ), performs the song If (만약에) which is a ballad featured on the soundtrack of the K-drama Hong Gil-dong.

Tae-yeon ~ If Live@OBS Music Star 20090406

Tae-yeon ~ If Live@OBS Music Star 20090406

28MB 4:18 H.264/AVC 480×272 PSP Ready

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Credit: source vid mplus@jpopsuki