Listen to Solfeggio Frequency (417Hz) Soft Proud Hum online. Solfeggio Frequency (417Hz) Soft Proud Hum is an Instrumental language song and is sung by Shivoam. Solfeggio Frequency (417Hz) Soft Proud Hum, from the album Healing Capabilities Solfeggio Frequencies, was released in the year 2024. The duration of the song is 1:00:00. Download Instrumental songs online from JioSaavn.