@samhenrigold About 50 years ago, someone wrote a book consisting solely of lists of strings of notes marked as U for 'up', D for 'down', and S for 'same'. These strings were about 25 characters long, and the author determined that nearly every melody, whether classical, jazz, or popular, could be identified solely by determining whether the next note was higher ('up'), lower ('down'), or the same as the previous note for a string of roughly 25 notes. And I recall it worked.

#NameThatTune