▁to ▁date ▁has ▁sold ▁over ▁ 1 . 3 ▁million ▁copies ▁digit ally . ▁The ▁song ▁contains ▁a ▁sample ▁from ▁" L ove ▁Is ▁Str ange ", ▁written ▁by ▁Mic key ▁Baker , ▁Syl via ▁Robinson , ▁and ▁Ell as ▁Mc Daniel , ▁as ▁performed ▁by ▁Mic key ▁& ▁Syl via , ▁which ▁was ▁also ▁used ▁in ▁the ▁song ▁R ink y ▁D ink ▁by ▁Bill ▁Just is . ▁ ▁Rem ix es ▁of ▁this ▁song ▁were ▁released ▁by ▁R 3 hab , ▁Play - N - Sk ill z , ▁Quint ino , ▁Greg or ▁Sal to ▁and ▁Al var o . ▁ ▁Track ▁listing ▁ ▁Download ▁ ▁" Back ▁in ▁Time " ▁– ▁ 3 : 2 7 ▁ ▁" Back ▁in ▁Time " ▁( Single ▁Version ) ▁– ▁ 3 : 2 5 ▁▁ ▁CD ▁single ▁ ▁" Back ▁in ▁Time " ▁– ▁ 3 : 2 5 ▁ ▁" Back ▁in ▁Time " ▁( Ext ended ▁Mix ) ▁– ▁ 3 : 4 1 ▁ ▁Music ▁video ▁A ▁music ▁video ▁to ▁accomp any ▁the ▁release ▁of ▁" Back ▁in ▁Time " ▁was ▁first ▁released ▁onto ▁Pit b ull ' s ▁official ▁V EV O ▁channel ▁on ▁April ▁ 2 0 , ▁ 2 0 1 2 . ▁A ▁few ▁hours ▁after ▁the ▁video ▁was ▁uploaded , ▁V EV O ▁removed ▁the ▁video . ▁An ▁edited ▁version ▁of ▁the ▁video ▁was ▁later ▁uploaded ▁on ▁April ▁ 2 1 , ▁ 2 0 1 2 . ▁This ▁version ▁removes ▁three ▁seconds