This audio recording, titled "Dizi Flute C Keynote 088 - E7," is a beautiful, melodic expression played on a Dizi flute, a traditional Chinese musical instrument. The focus of the recording is the C keynote, which is one of the central notes in the musical scale. This piece has a unique, ethereal sound that hovers in the E7 pitch range, creating a soothing, harmonious atmosphere. The flute's distinctive sound, both bright and mellow, is flawlessly captured in this recording, making it a perfect example of the Dizi flute's extraordinary musical range and expressive potential.