I guess there's need of using the black keys?
No, they're just there for show. Makes the piano look all cool. No one actually uses them though.
Hi!Thank you for the reply and information! Okay I understand now, when it designates a note, all the other keys will be adjusted according to the note, not only the 'do' sound. So I just got to practice all the notes. However, currently I would like to practice 'C' major only, hehe. Maybe later on I will practice all the other notes gradually
Yea, I would stick in the 'C' major nowadays, when I'm used to it, will check 'F' or 'G' I guess. And I think for each of the notes except 'C', there are some black keys involved, and that requires lots of practices I think