★★★★★
After hearing that Japanese opera singers eat black bean soup before performing I tried it for severe laryngitis. I'm a soprano and was singing bass. After trying the black bean soup I was up to alto in one day and back to soprano in two.
★★★★★
Re getting your voice back -- After hearing that Japanese opera singers eat black bean soup before performing I tried it for severe laryngitis. I'm a soprano and was singing bass. After trying the black bean soup I was up to alto in one day and back to soprano in two.
