Sweet Magpie

I wonder how you sing O’ sweet Magpie?
Sometimes in low notes, sometimes high.
I can’t understand any of your words
Your tune gets to my heart, dear Magpie

One part white, the other black
Some says you're the symbol of good luck
You're not trained, yet, sings so well!
When you sing great singers will fail

Your song awakens me like a morning alarm.
You, my friend never cause me any harm.