Japanese Mindset: This is something that often occurs whenever you listen to a piece of music and then all your memories start flooding back into your mind. This could be due to the smell of a certain dish, the sound of a known melody, the recollection of holding a certain thing or even seeing a familiar place. Everything becomes as if it were happening in the present moment. You find yourself smiling. There could even be a mild pain below that happiness. Japanese has a word for this feeling: Natsukashii.