Turna (Turkish: Turna, "Crane"; Greek: Τούρνα) or Τουρκοπουλα, also known as Hey ağalar böyle m'olur, Το κάστρο της Αστροπαλιάς, and Ήλιε μου, ίντα σου ’καμα ("What Did I Do to You, My Sun"), is an anonymous Turkish and Greek folk song. Turkish lyrics to the song were written by the 17th-century Ottoman Turkish ashik Karacaoğlan.