[zeroer]

The rules for newspaper headlines is not the same as for normal sentences.

> "Tanzania bans song for two years"

That's ungrammatical as a sentence but a perfectly good headline.

[qbrass]

It's not ungrammatical. You're just expecting a different usage of the word song, so it looks wrong.

Had it been "Tanzania bans song and dance for two years," you wouldn't have batted an eye.

[zeroer]

Wow, you're right. I missed that interpretation.