I'm right under you. But take away my first and I'm on top of you.

The first part of me is the chorus when ill, The second a cost, a payment, a bill. My two parts serve to make me whole The ground has given dawn a soul.

I kiss the wind and touch the sky, I soar high on your command. Up, down, left or right I fly, You guide me with a single strand.

Bound to darkness, yet aflame with light, A fallen angel's curse, my soul's plight. Eternal rider, fueled by wrath and night.

I listen without ears, I hear your heart’s song clear. I rest upon your chest to help your healer guess. What am I?