Listen to Sunlit Smile Serenity online. Sunlit Smile Serenity is an Instrumental language song and is sung by Black Box Standards. Sunlit Smile Serenity, from the album 心と身体が軽くなる朝の音楽, was released in the year 2024. The duration of the song is 1:41. Download Instrumental songs online from JioSaavn.