Q: I've seen you mention the frequencies of notes, a few times here on this page. Do you have this memorized for all notes on the piano or do you look it up?
A: sometime around 2012 i took the time to familiarize myself with them, rounded to the nearest integer. i still remember the majority of the numbers, but whichever ones i don't remember can be easily obtained by dividing or multiplying the ones i do remember from other octaves. i realize most people have not done this, and i apologize