Hey Brain, I went ahead and created a new thread for this with a related title so others can see and find this more easily. Hope you don't mind.

It's a good question and it's one I don't have a conclusive answer on. Occasionally I use it, but usually I don't. My general feeling is that broad is bad, especially for music. I think options like that can be good for broader offers like "weight loss" or something that has a huge and varied potential audience, but music is such a sensitive thing that I think it's really important that we speak directly to the people we target. So I typically don't use it. The times I have have been situations where I was targeting very small audiences for broader offers. For example, I promoted a local concert not long ago and I used that option and it seemed to work well enough. But other than examples like that I don't use it.

Perhaps I'll split test it one of these days and come up with something more conclusive. Thanks for the question. It has me thinking.