I just got back from Aldi. It is a child-sized guitar. They didn’t have one out of the box, but if you consider it a toy instead of an instrument, it is still a very inexpensive toy.
Rare for Perry. I mean, Firework is scrunched in there between California Gurls and Peacock. That being said, Katy Perry’s only in her 20s so it’s not like she was lollygagging at making a GRRL power song.
Tom Waits, Kids can totally get into him and his weirdness.
When my younger son was 6 years old he knew all the words to Tom Waits’ “Pasties and a G-String”. Everybody got a big kick out of that. About 20 years later I asked him if he still knew all the words. He said, “Yeah. But now I know what they mean”. 
Add Eartha Kitt to the list, then. 
I agree. What I would try to “force/trick” is an open mind about musical genres. But…
…this doesn’t seem as much of an issue with kids today. They seem to have much broader tastes now then they used to.
Check out the Putumayo Kids line