The #1 on Music Bank on 2012-12-14 was “Caffeine” by — — win No. 1 for the song and career win No. 4 for — (No. 4 on this show).
“Caffeine” has 1 music show wins in total: 2012-12-14 Music Bank. — had 4 wins in 2012 up to this date, and this was win No. 4 on Music Bank. The previous week's Music Bank #1 was “Return” by Lee Seung-gi. Episode data comes from broadcasters' published results (Wikipedia lists, CC BY-SA) and is recounted daily.