Found by MollyRealized over on Metafilter! It’s pretty much as the title says:
Sundry Sunday: Weezer’s “Buddy Holly” in the Mario 64 Sound Font
Tag: mashup
Sundry Sunday: Eleanor Rigby/Pokemon Battle Theme Mashup
From the depths of Mastodon, in that land of elephant people, four years ago josef posted a brilliant combination of a Beatles classic with some 8-bit Pokeflair. While the video seems gone from its initial upload, he reposted it on YouTube, which is what is embedded above.