i think you kinda cheated a little because i don't think dpcm audio samples are that good. but it's mostly a good emulation.
I used the Magic 8bit plug
It lacks a lot of feeling, but it's very cute. I feel as though it could be put into a level in a platform game :)
Hubba Hubba Ba Wubba Wubba
Please contact me if you would like to use this in a project. We can discuss the details.