This is the 4453rd most frequent German word.
klassischer
"Classical" or "traditional."
Here the term 'klassische' is used as an adjective describing 'Musik', denoting traditional or high-culture forms of music, such as those associated with composers like Bach or Mozart.
Mein Freund liebt klassische Musik.
My friend loves classical music.
The word 'klassisches' serves as an adjective modifying 'Beispiel' to emphasize that the example is standard or typical, often used in teaching or illustrating concepts.
Das ist ein klassisches Beispiel für ein Missverständnis.
This is a classic example of a misunderstanding.
Here 'klassischen' functions as an adjective describing 'Design', indicating style that is timeless or traditionally elegant.