Chicago Lyric Opera, Jussi Bjorling
A favorite story of JB at Chicago Lyric Opera comes from some "old timer" friends of my father: in II trovatore the conductor was not taking "di quella pira" fast enough for Jussi. He let go of the soprano's hand and started tapping his foot at the tempo he wanted. When the aria had finished, he pointed his sword at the conductor, lunged in his direction, and then ran off the stage. I wish I could have seen that!
Newsletter of the Jussi Björling Societies of the USA & UK: Vol. 18
, Article 5.
Available at: https://scholarsarchive.byu.edu/jussibjorlingsocietynl/vol18/iss1/5