Hi Guest - when I referred to "bleeding", I wasn't thinking particularly of mistakes - just the possible sound overlap when using multiple mics in a live take in one room.

So, if I have a mic positioned, say, 12" from my guitar, and another mic positioned near my mouth - depending on the technical specifications of the mics, of course - the guitar mic will pick up a little of the voice, and the vocal mic will pick up a little of the guitar. How much "little" is will depend (as I say) on the quality of the mics, their positioning.

I think all I'm saying is that this isn't really a problem. In fact, a recording where every track is recorded in total isolation can sound somehow sterile.

One of the traps I fell into in my early attempts at recording was to take the pan - the placement of tracks - to excess. So, for example, I might put, say, the voice at 12 0'clock (imagine a watch face), the guitar at 9 0'clock and the bass at 3 o'clock. Then I slowly realised that the resulting tracks often lacked warmth and "togertheness". These days I separate them just enough to give a little sound clarity - say 11 o'clock, 12 o'clock and 1 o'clock - which means, incidentally, that any bleeding from one sound source into another doesn't make much difference!