What we know -
1. Killer is of medium size based on strike point of the anchor.
2. Killer is extraordinarily strong based on the use of the anchor as a weapon.
3. Killer did not rob the victim.
4. Death was recent as blood is still flowing out of the victim.

Speculation:
3. Killer dislikes elves? Bards? Music? specific music? sensitivity?
4. Remaining motivations - Killer knew victim (personal), Not premeditated, rage?

There are witnesses to question at the Admiral's way and Fishers Wharf. Dispatch officers to question people in both locales.

Next steps:

Cast "Speak with Dead" on the victim and ask them 1) who killed them and 2) why? If they don't know ask them to 3) Identify themselves 4)describe the killer in detail, and 5)where the killer went next.

Blackheifer