adding different audio to different scene

Hi I m new to unity and trying to add background Audio to Scenes. i used this video to make script and add audio (Introduction to AUDIO in Unity - YouTube ). Now i Have 2 audio for the game .But I want first Audio to continue between first two Scenes and it must change to another audio for the rest of the 8 Scenes.and it should go back to first audio if first two scenes are again loaded.

@kamlesh2052

If you want that an audio should continue to the next scene i.e. the audio should not interrupt or restart, you need to use DontDestroyOnLoad(gameObject) on the AudioSource.
You would need to destroy this audiosource in the scenes where you do not want it to play.

If the audios restart in all scenes, you can just add AudioSources to all scenes with the respective audio that you need to play.