the audio separately, and combine them in the computer. It looked to me, the last time I checked, that the Best Buy type cameras no longer include an audio input connection. Even if they do, they probably will not accomodate serious mics. You DO NOT want to use an in-camera microphone for serious audio recording.
Looking for a reasonable camcorder that is serviceable in low/ rapidly changing light conditions that will maintain some semblance of audio quality to record live performances of a dance-rock band. The format of the recorder is not important. Any suggestions?

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