Mark my words, there will be bloodshed on the day of that Miley Cyrus concert. TODAY Show 2008 Concert Series 04/01/08 7:00 am ET R.E.M (in studio) 04/04/08 7:00 am ET Raheem DeVaughn (in studio) 04/15/08 7:00 am ET Naked Brothers Band (in studio) 04/18/08 7:00 am ET Ashlee Simpson (in studio) 04/25/08 7:00 am…