First off, you need to know that squids do not have ears and now this video should completely blow your mind. The science creative team at Backyard Brains did some experiments at the Marine Biological Laboratory in Woods Hole, Massachusetts where a squid was hooked up to a special iPod playing the 1993 hit song ‘Insane In the Brain‘ by Cypress Hill. And the same impulses that ears experience when listening to audio can similary be recreated when audio is converted to an electrical signal, like what happens inside a microphone and gently applied to tissue, in this case the dorsal side of a squid fin. This video
And now for the original version of Cypress Hill – ‘Insane In The Brain’


So basically it creates a stimuli to the neurons in the squid? Helping to see how it reacts to the different levels of emitted electrical/musical beats current? Or am I incorrect?
Insane in the squid brain lol