Simplify the following text for a Grade 8 native English-speaking person.
Original: Similarly , frets on earlier balalaikas were made of animal gut and tied to the neck so that they could be moved around by the player at will ( as is the case with the modern saz , which allows for the microtonal playing distinctive to Turkish and Central Asian music ) .
Simplified: Frets on earlier balalaikas were made of animal gut and tied to the neck so that they could be moved around by the player .