Sweet Dreams in Soul: Betty Black, Mississippi MacDonald.
Country: The Fly Birds.
But here's something special: Hayseed Dixie started as a hillbilly tribute to AC/DC. That's the kind of #GenreBending that can easily turn into 2 or 3 hours of YouTube. https://youtu.be/6kvWHzManUA
As an aside, I think Thunderstruck by Steve 'n' Seagulls was one of the first videos that pulled me down the YouTube rabbit hole. Thanks, guys!

Hurray for the Riff Raff is the brainchild of Alynda Segarra. They recorded an acoustic version of Sweet Dreams. It's dreamy.
Henry Mancini scored the 1961 film Breakfast at Tiffany's. His version of Sweet Dreams is like a film score with a full orchestra. Very classy.
Michael Whalen is a multi-talented musician who taught at NYU and performed widely. This version is... something else.
Let's check in with a few instrumental version of Sweet Dreams (Are Made of This).
Sander Melodies piano cover.
Marcus Frye: guitar with ukulele and maracas. (Correct me if I'm wrong.)
Escala: a string quartet. These girls rock!
Emil & Dariel: cellos. They cover a number of other really great songs, too. I love it!
Not exactly instrumental, but their voices are instruments: Scala, a Belgian girls choir.
And now for something completely different.
A version of Sweet Dreams (Are Made of This) by Vindaloo Singh called "Indian Remix." I hope this isn't racist. I was embarrassed listening to it. It's thankfully short.
A song called Seven by Turbo Street Funk is actually a medly of Seven Nation Army and Sweet Dreams Are Made of This.
And if you thought that was unique, Pomplamoose also recorded a Sweet Dreams Seven Nation Army Mashup.