The song “Bohemian Rhapsody” by Queen started as “joke” and trying to see how far people could push things with overdubs (180 in total, made on 24 channel mixers) and bringing opera influences into rock. A quote from Wikipedia:
“Baker recalled in 1999, "'Bohemian Rhapsody' was totally insane, but we enjoyed every minute of it. It was basically a joke, but a successful joke. [Laughs]. We had to record it in three separate units. We did the whole beginning bit, then the whole middle bit and then the whole end. It was complete madness. The middle part started off being just a couple of seconds, but Freddie kept coming in with more "Galileos" and we kept on adding to the opera section, and it just got bigger and bigger. We never stopped laughing.”
Some of the best presentations I designed for clients started like this. “Let’s try something completely different”. Often, these cases involved a relatively low-risk keynote for an internal audience. But many times these decks developed into serious presentations for outsiders.