This is the 4227th most frequent Russian word.
хороший
Good.
In this sentence, 'хороший' is used as an adjective to describe the quality or nature of the dog, implying it is good or well-behaved.
У него хороший собака.
He has a good dog.
Here, 'хорошая' is the feminine form of 'хороший', matching the gender of 'музыка', and it describes the quality or appeal of her music.
Её музыка всегда очень хорошая.
Her music is always very good.
In this context, 'хороший' modifies 'пример', indicating that it is suitable or effective for the given question.