both of these songs, while on youtube, arent actually in a way if ye get me?
behind the mask - 2010 mix exists, but demo was never released/leaked (fanmade mixes do exist though.)
She's Trouble - only hq version we have is the unfinished demo version of it, and the final mix is in extremely low quality.
so these two songs are still of high value in a way, any songs that were leaked back in 2001 (starlight, nightline, hotstreet) were mixed poorly imo, so the quality difference inthe 40th anniversary will be stark.
also, the likelyhood of Slapstick being released is high as it is the complete version of Hot Street i believe.