Simplify the following text for a Grade 7 native English-speaking person.
Original: Sezen Aksu ( born : Fatma Sezen YÄ ldÄ rÄ m ) ( born July 13 , 1954 in Denizli ) is a Turkish pop music singer , song-writer and producer who sold over 40 million albums worldwide .
Simplified: Sezen Aksu ( born 1954 ) is a Turkish pop singer , song-writer and producer .