Super Mario 64 for Nintendo 64DD Discovered

About 5 months ago YouTube user "adonfjv" posted a video of a prototype of Super Mario 64 playing on the rare/obscure Nintendo 64 add on, the N64 Disk Drive. Not much is known about this but it is very interesting. It's somewhat odd that this of all the DD prototypes people have been hunting was discovered but pretty awesome regardless. It's still debated what changes are present in this version apart from slightly better music, can you spot any?