Whether you are a superstar or not, I personally like to believe musicians can instantly connect using their common language.

This video from Moscow could be used as an evidence for that. Steven Tyler, the leader of the band Aerosmith, bumps into a busker when he was walking the streets of Moscow. Then he decides to jump in with him:

Singing together "I Don't Want to Miss a Thing", it feels as if the two is instantly connected somehow. A great scene.