Magical mystery sounds

It seems that my sources for Beatles information/updates are more or less limited to Wikipedia and Wired. Having publicly owned up to this dependency, I feel more comfortable linking to another intriguing read from Wired , this one about the studio machinations behind the "praaannng" part that introduces "A Hard Day's Night." I guess this specific sound had proved indecipherable, from a technical standpoint, until just recently. The code-cracker is an academic from Dalhousie University in Halifax, Nova Scotia named Jason Brown. The article links to his findings in a paper entitled "Mathematics, Physics, and A Hard Day's Night," which delves deep into the song's minutiae. It's opaque material (or was for me, anyway), but I'm down with the fact that such a study even exists. According to Brown, the Beatles "ushered in a new era in pop music with the opening of A Hard Day’s Night."