Listen to Solfeggio Frequency (639Hz) Blessed Quietude Oasis online. Solfeggio Frequency (639Hz) Blessed Quietude Oasis is an Instrumental language song and is sung by Grounding Buddha. Solfeggio Frequency (639Hz) Blessed Quietude Oasis, from the album Hypnosis Solfeggio Frequencies, was released in the year 2024. The duration of the song is 1:00:00. Download Instrumental songs online from JioSaavn.