Listen to Madame Butterfly, Act II: Humming Chorus (arranged for acapella choir) online. Madame Butterfly, Act II: Humming Chorus (arranged for acapella choir) is an English language song and is sung by Bill Connor and The Cavendish Voices. Madame Butterfly, Act II: Humming Chorus (arranged for acapella choir), from the album A Capella Choir: Arrangements of Classical Masterpieces for Chamber Choir, was released in the year 2012. The duration of the song is 2:35. Download English songs online from JioSaavn.