Just a sidebar, I used to produce radio commercials and thus I have overseen production at several studios in my region, mostly supervision of voice over talent, SFX, and stock music selection; but, on some occasions full jingle production. From this experience I can tell you two things: first, a finished commercial mastered to DAT could indeed be indistinguishable from talent, off mic and sans sound reinforcement, reading commercial's script; and, second, the finished commercial on DAT could be played in my home via a system consisting of very divergent speakers (JBL L100t3's) than those in production studio (Tannoy) and still deliver an impression that the talent was in right there in my home. The bottom-line is I know from my experience in radio commercial production that recorded music can indeed sound exactly like the original performance regardless to it being an acoustic or sound reinforced electronic presentation. The thing is any recording we might be entertained by is not going to relate to personal experience with the orginal performance so we just don't know if what we are listening to sounds real.