I am not a kantian, but an empiricist
"Reason" is a misnomer, since it implies some idealist property of organizing experience by abstraction. Animals can even sense patterns without having the ability to ponder on their meaning or whatever.
Patterns are written into our experience as cycles, rythms and melodies, which is why acoustics have such organic "resonance", and can move creatures in mass formations.
Of course today we recognize that all states pf matter are simply determined by vibration, which inturn orders atomic mass.