I need to film a classical singer in a church or auditorium setting. I will be using a Cannon GL2 and filming from the back or side of the room. There will be an audience present. Does anyone have ideas or suggestions to capture the best sound on a tight budget? Would it be best to use a separate recorder like an Edirol R09 field recorder or purchase a microphones to place near the singer? There is bound to be a lot of reverb and echo from the back of the room so the camera's internal mic would not work well at all. Any recommendations would be much appreciated.