Is it ever acceptablee to play a re- edit or re- production at a night/ nighter? Just say you had a fantastic acetate of master recording of some lost 6ts, or 7ts recording, but it just wasnt finished, it didnt have a bassline, drums, or needed an organ to fill out ther sound or maybe a terrible phyc guitar solo in the middle . Just say you had a working knowledge of music production, pro tools. ect. Would you use your skills to complete the track, cut it onto acetate and play it out? Obviously there are loads of variations on this theme, which I'm sure you'll identitfy!