Vintage T-Shirt Forum & Community Authentication Appraisals

This has me a bit stumped.
‘Death to our friends’ on the front graphic and ‘Oscillate my metallic sonatas’ on the back .
Is this a Soundgarden shirt, can’t find any other examples?

ok......so it seems that this shirt is by Mishka, an NYC streetwear brand that I know next to nothing about.
If anyone knows anything about the history or legitimacy of this graphic, please feel free to share, thanks.

Totally stumped!