Which band introduced you to mathrock?

For me it's funny cuz it's actually polyphia Wich isn't rlly math rock but it got me rlly curious about their inspirations and made me realize I actually loved instrumental bands so I basically did Polyphia -> ichika nito -> Yvette young THEN Toe wich since is my favorite band with Pretend, Tortuganonima, Clever Girl and Vasudeva

I realized later on that I've been listening to king crimson ALOT with my father when I was younger and they are basically pilars of what became math rock after so I guess it helped alot in the fact that it's a style that hits me so much