Do you think im musically talented?

Well, the things that I can do usually amaze people. I can sing perfect harmony, and never loose pitch. I've never taken one piano lesson, and i can play it. (Not like chords and stuff, but like one note at a time.) Whenever i do that for any of my friends and even my mom, they're amazed but i'm sitting there thinking "what the crap.. its not even that hard to do that?" But i've never met anyone else who can do that. I don't know.. I dont wanna seem like im tooting my own horn or anything.