I have been somewhat confused recently about Rock Band Network's Expert+/ Double Bass songs. I think RBN is awesome, but it seems that every metal song i have seemed to demo, there is no double bass charted. I know there could be because i can hear it within the song. On Youtube, i have seen songs in Audition Mode (yes, i know thats just a testing software) where double bass is infact charted. Is double bass in songs not aloud on the RBN itself? Or have no double bass songs been put out there yet? Any insight would be greatly appreciated.