Listen to Solfeggio Frequency (69.3Hz) Hopeful Ambient Tranquility online. Solfeggio Frequency (69.3Hz) Hopeful Ambient Tranquility is an Instrumental language song and is sung by Energy Channeling. Solfeggio Frequency (69.3Hz) Hopeful Ambient Tranquility, from the album Mindful Frequencies, was released in the year 2024. The duration of the song is 1:00:00. Download Instrumental songs online from JioSaavn.