Music geeks know E-Flat as the fourth semitone of the solfege. In fact, the prelude to Richard Wagner’s Das Rheingold is a famous piece of drone music that begin with a low E flat and builds to more and more elaborate figurations of the chord of E flat major. It is used in this opera to portray the motion of the river Rhine. However, it’s definitely not welcome at this particular bar. Continue reading for more nerdy and geeky jokes.