I agree Tiff,

If you send out personal invitations to top producers in that areaof your listing or "LA Holywood scene area" and then follow up with phone calls etc... Or maybe start with phone calls and feel out the big guns to see if they are receptive.

When I say top producers, look for agents that have sold or represented buyers in a range that rivals the one you are selling over the past year.  But don't stop there, look at their track record in prior years, you don't want to spin your wheels to heavily on an agent that just had one good year, they wouldn't have the network that a agent with many years of comparable sales might have.   Granted, they may be on the way to amazing  things so don't disregard them either. 

I would start in Malibu, Hollywood LaJolla etc... and call around and find out what those agents are looking for in regards to their clients. You can then tell them about your collaberation with the artist and how you are "thinking outside the box" . Who knows, maybe you will even get a referral to your area on a listing that one of those agents has now or in the future...building networks, that's what it is all about!!!

Great way to move forward...