4:35 INFINITE \"Back\" Official MV
4:05 INFINITE \"Back\" (Performance Ver.) MV
3:51 INFINITE 'Back' [Comeback Again in Seoul]
3:56 INFINITE - Back, 인피니트 - 백, Show Champion 20140723
4:05 INFINITE \"Back\" Dance Practice
4:08 [Comeback Stage] INFINITE - Back 인피니트 - 백, Show Music core 20140719
3:50 [HOT] INFINITE - Back, 인피니트 - 백, Show Music core 20140726
5:57 인피니트(INFINITE) - Last Romeo + Back at 2014 MAMA
3:52 Infinite (인피니트) - \"BACK\" Dance Practice Ver. (Mirrored)
3:52 Infinite - Back [Hangul/Romanization/English] Color & Picture Coded HD
3:54 INFINITE 'Back' (That Summer 2 Live Ver.)
8:11 INFINITE - Back / Paradise / Be Mine / Bad [Yu Huiyeol's Sketchbook]
3:51 【TVPP】INFINITE - Back, 인피니트 - 백 @ Comeback Stage, Show Music core Live
3:51 INFINITE - Back, 인피니트 - 백, Music Core 20140726
3:55 INFINITE 'Back' (Effect Advance Live)
3:52 [HOT] INFINITE - Back, 인피니트 - 백, 1위, Show Music core 20140802
3:55 INFINITE (인피니트) - Back [Han|Rom|Eng] Color Coded Lyrics