Some suggestions:
* In the filter section can you make the search link look more like a button?
* When viewing an individual performer can you somehow point out that the logos click over to their work on other sites.
* Also, on the performer page can you maybe add a heading above the the other performers. Something like Physically Similar Performers or something like that.
* I am a fan of minimalist sites, but maybe a soft color palette would give it a little more life. I would suggest a soft color to not draw too much attention away from the photos.
I am viewing on a smartphone(im at work) so i don't know if these are issues in desktop mode.
Do you have plans to monetize this somehow? Or is this just a side project for fun? Where is the data coming from?