Another example would be the orchestra part in the Beatles "A Day in the Life".
It gives the illusion of a continually rising pitch until reaching the final note.
 
 
https://en.wikipedia.org/..._in_the_Life#Orchestra
 
        "Martin later described explaining his score to the puzzled orchestra:

What I did there was to write ... the lowest possible note for each of the instruments in the orchestra. At the end of the twenty-four bars, I wrote the highest note ... near a chord of E major. Then I put a squiggly line right through the twenty-four bars, with reference points to tell them roughly what note they should have reached during each bar ... Of course, they all looked at me as though I were completely mad."

 
 
 

Sir Martin channeling Ligeti? ;-)

Clusters work well to create psycho-acoustic illusions.

Cool.
 
I'd be interested in learning about other audio "illusions" like this.
 
Just some names of the techniques and I can googly-fu it from there (but links would of course be welcome). I very much like this sort of thing.
 
Cheeeers!

https://en.wikipedia.org/wiki/Auditory_illusion
 
Also read up on Diana Deutsch, the psychologist who discovered and/or documented many audio illusions. She created two CDs called Musical Illusions and Paradoxes and Phantom Words and Other Curiosities to demonstrate them. Both are available on Amazon.
 
Here's a free PDF written by Dr. Deutsch that goes into the Shepard illusion.

Thanks, Bit.
 
:-)

Thank you bitflipper for even more useless pub (us colloq. bar) quiz knowledge ;-).

This was very interesting.  So I made a quick SONAR project to do this with a string library but I wasn't happy with the results.  So in googling I found this page:
https://jordaneldredge.com/blog/endlessly-rising-shepard-tone/
 
With a MIDI file already setup.  I thought, "Great!  That will save me some time".  Then I found that SONAR wouldn't load it.  I could play it with AIMP3 and I could load it into Reaper.  But what I didn't notice is that one of the tracks actually has MIDI notes above G10 (or G8 if you use -2 for the MIDI note name offset).  Reaper still loads the file and shows (??) for those notes, but SONAR just refuses and offers no insight into why.
 
Here's a cleaned up and SONAR friendly version of the MIDI file.
https://drive.google.com/...vzx_2Pac0R3c2M0anJqNXc
 
Odd how SONAR forces a Matrix track on it when saving as MIDI though.

Thanks for that, Matt! I'm gonna give it a go.
 
 

Yes, thanks a bunch.