I would never anglicize. I would never, because I have no ear at all, try to do justice to an accent either..and I wouldn't do a fake one anyway. I would just sing the words as handed down in an obvious American accent as I would expect a Chinese person to sing an American song in an obvious Chinese accent and I would not say to them, that is not how you are supposed to sing Home on the Range. Swing Low Sweet Chariot. I am convinced, despite my bad ear, that I can sing in Swedish so I sing along with the Scandinavian hour on the radio..works for me and I am sure the Swedes in my neck of the woods would be too polite to tell me to stop.