I am trying to find the name of a book I read years ago. All I can remember is that the government(?) is trying to open the last door into a alien spaceship(?) or an alien portal of some kind.
They have opened previous chambers by passing tests in science and reasoning but have been stumped by the last one involving artistic qualities. They recruit a professional guitarist to play his guitar inside the chamber.
The alien AI(?) mimics the guitar playing and they eventually have what would be called a jam session. As he is playing, the wall starts moving and is made up of robots(?).
The robots eventually move and reveal a tunnel. The robots had killed the people who came there before because they failed the test.