The meaning of the song is. Well. It's kinda hard telling what's the meaning of a song that you didn't compose, right? So this is just an opinion. The true meaning of the song is you hide a secret by not telling lies to others. You hide it by music. That's one importance of music. Miley Cyrus is our example for this situation. Keeping secrets? Just ask Miley!
Thanks Miley! You rock! Keep it up! God bless!