I saw the end of an interesting atmospheric color film probably from the 1970’s Sunday night on the American Horrors Roku channel. The channel doesn’t post any schedule so I have no idea what film it was. Towards the end an older guy walks through a mansion. He enters a room where a mechanical mannequin is playing the piano. The mannequin taunts him. The old man attacks the mannequin and breaks its head open. An unseen person grabs the man and dunks his head in an aquarium fish tank, drowning him. Then some creepy looking specter in a cape comes in and the credits roll. From the look of the film it might have been Italian, reminded me of Mario Bava. Any help would be greatly appreciated!