Rhythm Doctor is an indie rhythm game best known for its approachable level editor, where a decorations tab lets creators dress up their custom stages. This clip appears to be a fan-captured UI tick from that editor rather than an officially released sample, and its exact recording source is unconfirmed. Short interface sounds like this circulate widely because editors reuse them as a ding sound effect or a Discord notification whenever a video needs a clean, neutral click for menus and scene changes.