Just listen.
After hearing Baj's casual theme, I got working on this. It's actually inspired by the Undertale song LITERALLY called 'Sans'. Seriously Toby Fox, you could of done anything much more good, like 'The Punster' or 'A Punny Guy' but nope, you went for 'Sans'... Eh, whatever. The theme has some inspiration from Ren's casual theme, and FT's theme. Definitely made a beat box reference in the drums. Also, I made sure to use the sound that was like Sans' voice, cause it just fitted so well.
