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

The opening song o credits help me. Certain anime series o cine 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..." o the opening theme starts playing.

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