Why does there seem to be natural talents?

So, I myself and very good at music, and I want to know why? I don't understand what makes music easier for me than others, and what makes let's say dancing easier than it is for me. And no it's not really because of the whole practicing thing because when I was in middle school band and played saxophone. We were supposed to practice every weekend but hardly did I ever actually do that, and I was one of the best players in band. I also play piano and guitar, and with guitar, I'm barely able to practice music I play for my lessons, which are once a week because of jazz band at school where I have to keep my guitar at school, and yet I still play whatever song almost perfectly with as little as an hour of practice or less. I can understand how others are good at sports because of your body and what not, but what gives someone ease in a certain area like drawing over others?