This is so funny...play loud can be played with a sharp knitting tool.I never heard of it and didn't turn one up in a quick Discogs search but, I totally would believe it! I bet we could find it if we could find the specific title.
It turns out the idea for this "silent" album certainly is not new. A quick check on Discogs found this:
No Artist - The Nothing Record Album
Take a look at the listing--it's hilarious! The back cover of the jacket kind of hints as to what is inside.
View attachment 3137
I would play my copy LOUD, as advertised.