The bond an artist shares with his/her director is a rather fun one. They might be collaborating on serious projects, but the atmosphere on the sets is always bubbling with energy. Looks like actress Sana Khan and her director Vishal Pandya had a blast shooting for their movie Wajah Tum Ho because we have dope on the way she pulled a prank on Vishal. It goes that Sana was asked to rehearse with a violinist for a shot in the film. When they were supposed to shoot it, Sana went up to Vishal and told him she was sorry, she had not rehearsed it. In fact, the violinist conveyed the same to the director too. Vishal was left with no choice but to go ahead with the shoot. When they started rolling, Sana played it so beautifully that the director was stunned. It’s then that he realised that she had played a prank on him. The particular bit of her playing the instrument has been retained in the film too