Genetics can influence your natural singing voice. That makes a LOT of sense, considering the fact that I've never had voice lessons in my life, yet have always been told I have a great singing voice. Look, most of my genetics suck, but every so often, ya get lucky.
I've been really fine-tuning my voice lately because my hyperfixation is...well...a musical. I started off a good singer, then got into Hazbin Hotel. Now this short little freak can belt a high C and hold it for twenty seconds.
See, Hazbin Hotel is beneficial! TAKE THAT, MOTHER!