I remember building a kit when I was a little kid, maybe 7 or 8 (so probably 1974-76) of a guy playing an organ and there was a monster that would spring out of a hiding place in the organ making the player leap back or throw his arms up. I think it was called something like play it again sam.
Does that ring any bells for anyone? I also built a King Kong and Godzilla with glow in the dark parts around the same time. I thought it might have been an old Aurora kit but the recent re-issues of their old horror kits don't look like the same kind of stuff being mostly static displays.
This was one of my first models so I've been really curious to know more about it.