Something somewhat related to this, I'm in a music theory class and the professor commented that a person without perfect pitch can only recognize about 7-9 pitches if they hear them (like a usual major or minor 8 note scale), but people with perfect pitch can recognize 12 or more (this was somewhat unclear because we were talking about the 12 note scale and not actually about people with perfect pitch), which I found interesting and immediately thought about the gods of Hallendren, naturally. Of course my original thought was wondering if they would listen to music with the 12 tones and if it would just sound like so much noise to people below the 3rd(?) Heightening rather than if the gods of Hallendren would find a piano's tuning Not Good.