It is one of Mozart's most recognizable operas. Some see in it the author's connections with Freemasonry. One of the opera's characters - Sarastro - sings in his aria about the ideals of friendship and brotherhood, and later the characters undergo an initiation ritual to purify them and create better ones. Based on this, it was hypothesized that Mozart's death was caused by members of the Lodge in retaliation for betraying their rituals.