Every day you learn something new.
No man is an island. No man stands alone.
You always will be singing a song or humming a line or a melody.
But when you have to deal with notes, and to be able to make a full definition of what a sound is - if you are not around that environment, then you'll find you lose that feel, that momentum, you lose all that.
Well, until this very day, I'm still learning.
You can't find the sound if you just love sleep.