Two Heads are Better Than One

I’ll need some help from you guys concerning this one. I’ve recently received this optical illusion from an unknown visitor, with title saying: “Two heads are better than one“. Further description said something about an optical illusion in lady’s orchestra. I’m not sure if this was some kind of a joke, but apparently there is something else hidden inside this picture. My guess is that there is another person’s head seamlessly integrated within the photo, but I had no luck spotting it. Let us solve this one together. If the illusion wasn’t that cool, don’t blame me – I couldn’t see it, thus had no chance deciding if its good enough to appear on our website. To be frank, I enjoy this kind of illusions the most (the ones I never managed to solve myself). This give me an opportunity to enjoy reading your comments, and participating in the open debate. You can click the image to see it in full size, which may help seeing the illusion better.