This sound is the notification tone associated with Telegram, the messaging app launched in 2013. Over time, creators started using it in short videos, screen recordings, and meme edits whenever they wanted viewers to instantly understand that a message had arrived. Its popularity comes from that immediate recognition: even outside the app, the alert quickly communicates incoming chats, awkward replies, or sudden updates. It is often used alongside other messaging cues such as Whatsapp notification sounds when editors want to mimic different apps.