Does this work inside of Facebook groups and LinkedIn groups? I have specific groups that I am a part of and I want to know if this is possible and if so how would I accomplish doing this.

I have a very specific niche that I am looking for within music. I am trying to target music fans of a certain band. Could I use this to go into the group and scrape email address from there?

And if so how would I do this. Thank you so much!