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

The opening song অথবা credits help me. Certain জীবন্ত series অথবা চলচ্চিত্র 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..." অথবা the opening theme starts playing.

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