This sound comes from Vivo's Android phones, where it is listed as an internal system notification called musicbox. Vivo, a smartphone maker known for its Android devices, includes a set of gentle built-in tones for calls, messages, and alerts, and this music box chime is one of the softer options in that collection. Because it is short, clean, and easy to recognise, people have shared it online as a downloadable ringtone and notification sound. It is now used beyond Vivo phones by anyone who wants a calm, familiar alert that sounds like a small music box rather than a beep.