I'm pretty sure that's a young Bob from Bob's Burgers.
Musician Performs Pink Floyd’s ‘Great Gig In The Sky’ On Theremin

Because eccentricity knows no bounds, this is a video of French musician Grégoire Blanc performing Pink Floyd’s classic ‘Great Gig In The Sky’ on “the highly-expressive Haken Continuum, a vintage Elektor Formant modular synth, grand piano, and a theremin taking on Clare Torry’s famous vocals.” I imagine Pink Floyd would probably be into it. You know I used to have a friend with a fancy theremin like that but we aren’t friends anymore because one time he caught me playing it with my penis and he didn’t like that, especially not in front of everyone at his stupid dinner party.

Thanks to my buddy Nick, who was there and agrees it’s not like I actually made contact with the instrument.