Listen to A Night At the Opera: Alone (2) online. A Night At the Opera: Alone (2) is an English language song and is sung by The Marx Brothers. A Night At the Opera: Alone (2), from the album The Marx Brothers Sing & Play (67 Songs from Their Movies), was released in the year 2011. The duration of the song is 2:58. Download English songs online from JioSaavn.