An internationally-acclaimed Turkish pianist is to go on trial, accused of insulting Muslim religious values in comments posted on Twitter.
Fazil Say is said to have mocked Islamist beliefs about paradise and the call to prayer. He has denied the charges.
If convicted, he could be jailed for up to 18 months.
The 42-year-old has performed with a string of international orchestras, including the New York Philharmonic and the National Orchestra of France.
He has also served as a cultural ambassador to the European Union.