I didn't recognise it
And I've played Super Mario 64 since I was 3.
I didn't recognise it past the first few notes and I had a listen to the original and realised what a brilliant recreation you have made. My only concern is this:
It's a little too repetitive, say after a while put some continuous vox or something in the back with a very quiet tambourine/bass drum every bar. It would sound pretty cool if you did that.
You did a great job anyhow and I really like it.
9/10 5/5 + download.