subgroups

How can I create a group on drupal that includes core group members (such as members of a music band) and fans of that group? The group would help core members organize among themselves (set a gig date for example). It could also let fans communicate with the band and among themselves.

Would using modules "organic groups" and "organic groups subgroups" work? I'm thinking core members would be a organic group and fans would be a subgroup.

Thanks in advance. I hope this is a good place to post this type of question as I couldn't find a group for OG.

Jin