Amusia

Some people don't need to take drugs to get it:

http://news.bbc.co.uk/2/hi/uk_news/magazine/4655352.stm

> Some people don't need to take drugs to get it:
>
> http://news.bbc.co.uk/2/hi/uk_news/magazine/4655352.stm

See:

http://orion.oac.uci.edu/~kourosh/psych266/Drayanascience2001.pdf

-C.