I find it interesting that all of these rare song clips are songs written by Tony Geiss. Makes me wonder if he actually supplied the copies. I've read that he recently auctioned the copyright on all of his Sesame Street songs, not sure if anybody bought them (it was a pretty steep price, I think the starting bid was 40,000 dollars). Looking at these clips, the quality isn't as good as the quality on all those rare episodes that mysteriously surfaced among fans a few years ago. Doesn't mean that they didn't come from the vault/same place. I know that, before making digital copies of all episodes, Sesame Workshop would convert all their old episodes to new video formats every year to preserve them, if they kept the old copies in the vaults then these could have come from the older copies while the better-quality ones came from later copies. I also wonder if maybe these come from an incomplete episode (though would it contain so many songs from the same songwriter?). It looks like the beginning of I'm Square is cut.