How can anda tell if atau when an Anime series atau Anime movie is being play on the screen just sejak LISTENING to it from a distance (and when you're someplace else within hearing distance)?

The opening song atau credits help me. Certain Anime series atau Filem have particular openings that are unique to them. For example, I know when Yugioh is on when the voice of Yami (Dan Green) says, "Previously..." atau the opening theme starts playing.

This is the full theme song, but those opening notes are distinctive to Yugioh.