story identification - Movie about a boy with telekinetic powers

I've been thinking about a movie which I saw as a kid in 80-90xx. Here are some scenes which I remember:

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  A boy has uncontrolled telekinetic abilities and he is on the run from people (officials) who want to investigate it.

  
  


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  His friend who plays a musical instrument (violin or smth else) helps him to train his abilities. Puts a glass/bottle/plate on a table and tells him to move it without dropping.

  
  


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  In the end government officials ask him to handle a special bomb filled with liquid very high explosive material. The bomb was stuck on a ramp of some building. The boy successfully prevents explosive liquid from spilling out of the bomb and moves it with his powers to the ground.

  
  


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  In the last scene the boy helps to his musician friend to get a soloist party with an orchestra after demonstrating to a theater director his powers.

  
  

Appreciate to find out what was the movie title.