I really like to play the piano and keyboard. Do you play? 
Oh no, I do not have the ear for it. My grandma could hear something and then play on her keyboard.
I wish I was as good as your grandmother. It's hard  to know when exactly to press down on the key to strike the strings. 
Yeah there is an art to it. Some people are just blessed with an ear for music.
Definitely especially the ones that play sting instruments like the harpsichord.