Turkish folk singer Muzaffer Akgün died on Saturday aged 85.A funeral service for Akgün, the country's first gold record winner, will be held at Istanbul's Teşvikiye mosque on Tuesday - the same day national broadcaster TRT's Istanbul Radio will run a program in her memory.Akgün's friend, singer Onur Akay, told Anadolu Agency of her death.Born in 1930 in Istanbul, Akgün started her career 16 years later with Ankara Radio. In a career that spanned radio, TV and film work, she was one of Turkey's biggest stars of the 1960s and had a huge influence on following generations of Turkish musicians.