ics ▁as ▁their ▁titles , ▁and ▁Y un qué ▁even ▁introduced ▁the ▁band ▁on stage ▁at ▁one ▁of ▁their ▁live ▁performances ▁in ▁Puerto ▁Rico ▁( ment ioned ▁in ▁the ▁section ▁" M aj or ▁success ▁in ▁the ▁Amer icas " ▁below ). ▁ ▁Accept ance ▁of ▁Cal le ▁ 1 3 ' s ▁music ▁even ▁influenced ▁the ▁former ▁Governor ▁of ▁Puerto ▁Rico , ▁An ib al ▁A ce ved o ▁Vil á ▁who , ▁in ▁December ▁ 2 0 0 5 , ▁admitted ▁to ▁listening ▁to ▁Cal le ▁ 1 3 ▁because ▁his ▁son ▁had ▁copied ▁some ▁of ▁their ▁songs ▁to ▁his ▁i Pod . ▁A ce ved o ▁claimed ▁that ▁" song s ▁such ▁as ▁Cal le ▁ 1 3 ' s ▁were ▁eye ▁open ers " ▁to ▁him . ▁As ▁a ▁result , ▁since ▁the ▁country ▁had ▁a ▁chron ic ▁problem ▁of ▁people ▁being ▁un know ingly ▁injured ▁or ▁killed ▁by ▁st ray ▁bul lets ▁fired ▁to ▁the ▁air ▁on ▁New ▁Year ' s ▁E ve , ▁A ce ved o ▁felt ▁comp elled ▁to ▁inv ite ▁the ▁du o ▁to ▁La ▁Fort ale za ▁and ▁to ▁have ▁them ▁record ▁a ▁song ▁against ▁shoot ings ▁bul lets ▁in ▁the ▁air ▁as ▁a ▁way ▁of ▁celebr ating ▁the ▁hol iday . ▁ ▁The ▁single , ▁" L ey ▁De ▁Gra ved ad " ▁( L aw ▁of ▁Gra vity ) ▁was ▁released ▁as ▁part ▁of ▁a ▁public - service ▁campaign ▁for ▁that ▁matter . ▁Some ▁political ▁advers aries ▁of ▁A ce ved