Piano Girl (Turkish: Deli Deli Olma) is a 2009 Turkish comedy-drama film, directed by Murat Saraçoğlu, starring Tarık Akan and Şerif Sezer as two elderly people forced to question their histories and reveal their big secrets. The film, which went on nationwide general release across Turkey on April 17, 2009 (2009-04-17), was the opening film at the Sinema Burada Film Festival in İzmir, Turkey, and has since been screened in competition at a number of other film festivals, including the 46th Antalya Golden Orange Film Festival, where, according to Terry Richardson, writing for Today's Zaman, the rapt audience gave it a standing ovation.

The defunct Today's Zaman mistakenly stated that both Mishka and Popuch were "Molokan". Mihska was the last Russian and Malakan, and Popuch was Turkish Muslim.