I love this picture of the boys because their faces like Peter's smile feels awkward and kinda forced Ray has a showly business man type smile Winston's smile feels genuine and Egon is not smiling because of course
Thank you to Ghostbusters: Frozen Empire for making it canon that the Ghostbusters actually did do a song and music video with Ray Parker Jr. as advertisement for their services.
I whole-heartedly believe that it was Janine's idea and she lost her mind watching Egon and Peter grumble about it while Ray and Winston have the time of their lives.
Peter, this is an incredible breakthrough. What a discovery. A psycho-reactive substance. Whatever this stuff is, it responds to human emotional states.