The Singing Blowjob [NSFW]

So this man go to a massage parlor to get a back massage. After the massage, the masseuse offered him a singing blow job. Intrigued, the man accepts. So the masseuse turned off the lights and started giving him a blowjob. Shortly after beginning she starts singing, in a clear and coherent manor. The man was baffled. The next week he decides to go back and find out how she does it. He goes in and gets the same thing. The masseuse does her thing, turns off the lights, and starts giving him a blowjob. When she starts singing the man turns on the lights and sees a glass eye on his lap.