(Epistemic status: low-level infohazard, class Earworm. You have been warned.)
The video, "Baby Shark Dance", has over 2,773,743,743 views as of the time of this post. It bit into me while captive to a parent soothing their child on the BART subway some time ago and has occasionally reared its ugly snout ever since.
I am curious what models of music psychology have to say about this phenomenon and also what those explanations would suggest for increasing the virality of a given piece of music, audiovisuals, or any memetic content in general if applicable.