Okay, I think I understand a little better now...

I think most of my confusion is stemming from that DO, at least where I went to school, functions as a social sorority and not a professional one. We hold formal rush and have absolutely no obligation to bid everyone that rushes. In fact the year before I pledged, we were trying to set up with the other social sororities on campus to hold our Formal Rushes together, but it for some reason it got voted down. We hold initiation and ritual. We are members for life. We have a clause that specifically states that we can not be a member of any other social sorority, although we can be in a professional or honourary one like STD.

I'm absolutely shocked that there are DOs that are members of other social sororities - like I said before, we were taught that that is not permitted per Inter/national, although maybe that's changed since I've been in college.

As to whether most of our activities are music based or social based...I'd say a good mix of both. We do most of our philanthropy work with music emphasis (ie. music in our schools month, etc.) but we also do other philanthropy (when we're allowed to!). We do a lot of socials, though, too, whether they be sisterhood events or mixers/formals with other organizations. I thought that's the way all the DO chapters were, but maybe not...