Answer:
I do not have eyes but I once could see. I used to have thoughts but now Iām empty.
I am a rock group with four members. All dead one was assassinated.
I fly to any foreign parts assisted by my spreading wings. My body holds an hundred hearts Nay I will tell you stranger things when I am not in haste I ride and then I mend my pace anon.
Goes over all the hills and hollows, Bites hard, but never swallows.
I have fangs and enjoy piecing holes with a single bite.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.