B-Side Tracks With Most ULs in MelOn's history

1.  IU : Meaning of You (2014) — 5.6M



1.  IU : Merry Christmas in Advance (2010) — 5.6M



2. Busker Busker : Yeosu Night Sea (2012) — 4.8M



3. PSY : What Would Have Been (2012) — 4.6M



4. Buzz : Thorn (2005) — 4.4M



Cr: @ iu_stats