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

The opening song ou credits help me. Certain animé series ou films 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..." ou the opening theme starts playing.

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