Describe the scene in which Yegudkin opens the Alexander he has ordered for a student.

The old teacher unwraps and assembles the horn, then attached one of his mouthpieces to the horn and plays. His music amazes both the student and Jack The sound Yegudkin is able to get from the horn mesmerizes Jack. The man plays runs reaches both the lowest and the highest notes the horn can deliver, and can play three-note chords. Suddenly, Yegudkin stops and hands the horn to the graduate student.