"Knock Knock - Tuna" joke

Knock Knock
Who's there!
Tuna!
Tuna who?
You can tuna a piano, but you can't tuna fish! Knock Knock
Who's there!
Tuna!
Tuna who?
Tuna your radio down, I'm trying to get some sleep! Knock Knock
Who's there!
Tuna!
Tuna who?
Tuna piano and it'll sound better!