A Detroit man accused of threatening to kill his Warren girlfriend mounted his defense by song.  Callius Moon is facing two felony charges: malicious destruction of fire or police property and resisting or obstructing a police officer.  As he was arraigned Tuesday in Warren District court via video feed from a city lock up, Moon began telling his story in a freestyle rap.  He sang that people were trying to “put it on [him],” among other things. He then offered a few additional verses in which he began to use profanity. It was then that District Judge John Chmura told Moon “that’s good” and the “show’s over.”