Other mistake: There is a man and a woman who do the voices on the radios Leon listens to at Game Control. The man also does the voice for 530 AM at the airport, while the woman does the voice for the airport intercom, first noticeable when the White Team arrives at the airport. The woman then does the voice of the hotel operator, "Paging Mr. Player." These two are very busy indeed.
Other mistake: For the first clue, the telescope readings are 38-22-23/56-10-11. When Marvin enters them, he mutters the numbers 22-23-68-22. (00:20:30 - 00:32:00)
Other mistake: The elevator in the Bonaventure Hotel shows buttons for 51 floors. The Bonaventure has only 35 storeys.
Answer: It's called Heart And Soul. Also known for the big piano scene in the movie Big.
lartaker1975