Ooooh this is brutally difficult!! Both versions are wonderful
Marginally, and actually almost randomly, because both are so good, I'll vote for Smells Like (seriously) Fucked up Teen Spirit
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Round 42:
This song recently appeared in "The Cover or The Original?". Now let's look at 2 different versions of it, neither being the original.
Shapes Of Things before Jeff Beck and Rod Stewart's eyes:
Shapes Of Things before Ian Gillan and Deep Purple's eyes: