Listen to Madama Butterfly: Act II, Humming Chorus online. Madama Butterfly: Act II, Humming Chorus is an English language song and is sung by Various Artists. Madama Butterfly: Act II, Humming Chorus, from the album The Most Relaxing Classical Music In The World, was released in the year 2013. The duration of the song is 2:56. Download English songs online from JioSaavn.