I know, the title is an exaggeration, but what you hear is the closest thing to Kurt Cobain you've ever heard.
Don't pay much attention to sound quality, only the vocal part.
I will place the original links as annotations in the video (You know, to keep the suspense).
PS: The number one will leave you with your mouth open.
Enjoy it.

00:00 #6    • Video  
02:26 #5    • Nirvana - drain you cover band ''heav...  
06:09 #4    • Negative Creep (NIRVANA Tribute) - Sc...  
08:30 #3    • You Know You're Right / Sappy - Full ...  
11:40 #2    • Моя оборона ( Летов-Cobain cover-комп...  
15:19 #1    • Up To Eleven - Serve the servants (Ni...