Listen to 甜蜜约定（八音盒版） online. 甜蜜约定（八音盒版） is an Instrumental language song and is sung by 轻音之觅. 甜蜜约定（八音盒版）, from the album 场景环境背景纯音乐合辑（短视频背景纯音乐）, was released in the year 2022. The duration of the song is 2:16. Download Instrumental songs online from JioSaavn.