Listen to Soft Echoes of Knowledge online. Soft Echoes of Knowledge is an Instrumental language song and is sung by Mellow Adlib Club. Soft Echoes of Knowledge, from the album のんびりと楽しむ読書タイムの音楽, was released in the year 2024. The duration of the song is 2:04. Download Instrumental songs online from JioSaavn.