Machiventa says:

@Wubrotha#1 – so I went and listened to this and I remember not liking it back a few years ago… but I’m thinking these are all redone because he obviously didn’t have access to the Gazillion Ear acappella back in 2006… anyway this is actually pretty decent so I take back the wack comment BUT…

these are all previously released acappellas, trust me I’m a huge DOOM fan, I’m also the moderator of the DOOM forum here on HHS http://forum.hiphopsite.com/Forum14-1.aspx – come join us! It’s a little slow right now because HHS was having server problems and was down for months.

Dan is wrong says:

These are fan remixes. How could anyone believe that this is a DOOM/Borat collaboration? Sacha Baron Cohen was not involved in this. MF DOOM was not involved in this (the recordings are just old acapellas). And I highly doubt Danger Mouse was involved in this; for starters, “moustache” is a common alternative spelling for “mustache” (in fact, my Firefox spellchecker thinks “moustache” is the correct spelling) and although the title is clearly a pun referencing “The Mouse and the Mask”, that doesn’t point to evidence that Danger Mouse was involved in this at all. It’s simply a reference made by a fan to a previous and legitimate DOOM release.