It should be noted that when properly recording video on location there is always a request for :60 seconds or so of silent "Room Tone," or whatever ambience there may be, so that it may be added later to cover audio edits, fades and so forth. I knew a very good musician who claimed that every room has fundamental frequency, which skilled musicians are aware of and can respond to. Good musicians will certainly respond to the reverberation tail in a room that sustains their notes. Dave Radlauer -- cell and text# 510-717-5240 www.JAZZHOTBigstep.com