You remember how I told you that Nathan was obsessed with the soundtrack from Trolls? Well, that obsession transferred to a couple tracks from the film Sing

As expected, the pattern continued with The LEGO Batman Movie but not in the way I expected. 

I really figured he'd latch onto the song "Friends are Family," which, if you've seen the film, is the closing number/dance sequence. 

Alas, no. Well, not entirely, at least. He likes this song but...

He has truly fallen head over heels for Patrick Stump's "Who's the (Bat)Man?"

Stump, in case you don't recognize the name, is the frontman of Fall Out Boy. But, when he's not performing with FOB, he likes to experiment with a funkier R&B-infused sound. This track, however, is very heavy metal. Something I'd more readily expect from FOB guitarist Joe Trohman. 

And Nathan can't get enough of it. He likes to pretend like he's fighting you when he listens to it.

My lord... my son is a metal head!

He's preparing himself for mosh pits!!

And he's only four years old!!!