I'm curious as to what the sources are for some of these amazing sound mixes heard on Harmy's releases.

I know that the 1977 surround track was put together by hairy_hen, and read how this was done and it's amazing work...truly.

The source for the LD tracks is obvious, but what are the sources for the SW 77 mono track?

Also curious about the sources for the lossless 1980 ESB surround, stereo and mono mixes.

As these are all presented in lossless with harmy's editions, I'm wondering if the sources were lossless as well.

I'd appreciate hearing from anyone with insight on this...cheers.