To come alongside Cossack for a moment, it is really hard to decide between Cohen and Dylan, who is the worst vocalist. They are on different ends of the vocal range; but neither can be considered crooners. I think that the magic of both is the poetry that is buried underneath the vocal melody. To find an equal in prose, with the added benefit of a pleasant voice, one would have to consider Paul Simon or Joni Mitchell.
Cossack, if that was your first experience, I would encourage you to listen more and see if anything speaks to you. Similar to pipe tobacco, or Monty Python, it sometimes takes lengthy persistance to gain an appreciation for the mystery that is/was Leonard Cohen.