Original sentence: (Orpheus is said to be from Thrace, a region partly in Bulgaria.)  Diatonic scales predominate but in the Rhodope mountains, for example, pentatonic scales occur, while in Thrace chromatic scales with augmented intervals (similar to the music of Classical Greece)
Edited sentence: Diatonic scales predominate but in the Rhodope mountains, for example, pentatonic scales occur, while in Thrace chromatic scales with augmented intervals (similar to the music of Classical Greece)