[Solomon can be no more bloodthirsty than the usual wizards the Northern spirits deal with, so it's probably? fine? Probably!]

It won't. The spirits are there, but being able to see them or talk to them doesn't mean they're going to listen. Only the ones that have claimed you will, but your senses are only limited now because of a lack of power and experience. Up to you whether you'll ever be able to hear them, though.