The Vienna Chamber Orchestra was performing Mendelssohn’s Italian Symphony No. 4 in Izmir, Turkey, when a wandering music fan decided to join them onstage at the amphitheater.
He's a good boy, and so deserves first chair in the violin section, although he'd rather listen than play. He knows his limitations. The conductor was amused. You can imagine what the musicians who couldn't see what was happening thought when the audience started laughing and applauding at an inappropriate time in the music. -via reddit