There's a fascinating phenomenon known as the Stroop effect[0], where if you get people to read a series of color words (e.g. "purple blue green red"), where the words are colored, but in the wrong color, it slows them down quite a bit. This was used to identify Soviet spies by showing them colors written in Russian; native Russian readers were slowed by the incorrect coloring, people who didn't know Russian could read it quickly.
Well, the Stroop effect applies to music notes, too! People with absolute pitch are impaired from reading a sequence of note names when a non-matching pitch is played at the same time. People without AP can read it just fine.
People with true absolute pitch can't help but know immediately and automatically what note a sound has. It taps into the language center of the brain. Does your song trick give you such an overwhelming sense of the note, that if someone played a different note it would be noticeable and distracting enough that you can't read a simple word or music note on the page?