I think it is Porch Dick's son blasting the horn. I think they wait to introduce the wolves. Maybe a couple episodes before the mid season finale. It appears to me that Morgan and Michonne may now be the conscious of the group. I had hoped no one in the group would have that role this season and that all in Rick's group would be the monsters that would just as soon shoot you as look at you if you got in their way and have someone from the community try to be pansy. One thing for sure, with the past history of the show, the voice of compassion always dies. If they hold that trend then that would mean Michonne or Morgan doesn't survive the season. My money is on Michonne. I don't think they drag Morgan's character along like they did only to have him die the one season he finally gets a regular role.