> 129.74 is not really close to a power of two. About a 1 percent difference. It's close enough. Equal temperament is a different issue. The 12 natural tones

> 129.74 is not really close to a power of two. About a 1 percent difference. It's close enough. Equal temperament is a different issue. The 12 natural tones are necessarily approximations and can't be represented exactly due to the 1 percent difference.