Hmmm, I believe if the thing doesn’t get finalized and saved to the minidisc, you’re pretty much fucked.
It's a tapers worst nightmare, pulling your md outta your pocket and it's switched off of or you drop it. This happened last night, when I pulled my recorder out of my pocket it had switched off, the sinking feeling is indescribable and I feel for you. Luckily when I listened back to the tape it had the show minus the last song, so it wasn’t all too bad.