So, I've been messing with this Easter Egg solo and with friend since it cams out and I discovered something interesting. When you're doing the Main Easter Egg in actual game play you can see the doll and access the papers for the piano but if you go into a custom game the doll is not there and the papers are all on the piano and they are all in there three coordinated spots on the map and can't be picked up. How is this relevant? Well, that basically justifies both the piano notes and the little doll are both apart of the MAIN EE. I have activated song, floating car, and extra kraken from the stokers box on custom games. So, try focusing on the doll or the piano keys for Step 6. I've also put all piano sheets on piano in correct order and when you do so, strike the piano with your speciality weapon and the pianos turn blue. I'm sure it's on of the steps of the Egg