> First the most nitpicky but easiest to solve: They tried lowering the music by tiny amount. Will lowering it more be even stronger? In particular will lowerin

> First the most nitpicky but easiest to solve: They tried lowering the music by tiny amount. Will lowering it more be even stronger? In particular will lowering it by a semitone work even better? Then it would suggest it's about the pitch rather than the tuning. Also, the way they lowered the pitch was to slow the music. So the change in tempo could also have an effect. > Second, they did first 440 and then 436. There will be a familiarisation effect. 2nd time in the same situation with the same music could likely less stressful. But yeah they mention they want to do randomization next. They had two groups, one which did 432 Hz first and one which did 440 Hz first.