All singing is choice. Choice carves sound. Watch Birdy singing Bon Iver’s Skinny Love and you’ll see her curving her lips inwards and letting them rest together on the m as she sings my, my, my, my, my. Her pause on the round body of the m weighs down the flyaway y. It adds a layer of resigned melancholy to the word.
It’s a choice. Birdy doesn’t round her lips in the same way when she sings the other words that begin with m in Skinny Love: moment and morning. Why pause on the m of my but not the m of morning?