ok so apparently people have done this before
(update: title change. i was rushing and put both "vocals only" and "off vocal" in the title. how would that work)
links time
original: https://youtu.be/19y8YTbvri8
instumental: https://youtu.be/OBVWb-XfEds
vocals (and guitars!): https://youtu.be/6oVbHUBwIFM
'nother one just in case: https://youtu.be/sM-iB_QJ3q0
'nother one just in case 2 electric boogaloo: https://youtu.be/1LBtcDw_mlA