_Mama take this badge from me _I can't use it anymore _It's getting dark too dark to see _Feels like I'm knockin' on heaven's door 学琴交流v：zgguitar _Knock-knock-knockin' on heaven's door _Knock-knock-knockin' on heaven's door _Knock-knock-knockin' on heaven's door _Knock-knock-knockin' on heaven's door _Mama put my guns in the ground _I can't shoot them anymore _That cold black cloud is comin' down _Feels like knockin' on heaven's door