Charles Darwin on the appreciation of musical notes by the ears of man and other organic beings

“A critic has asked how the ears of man, and he ought to have added of other animals, could have been adapted by selection so as to distinguish musical notes. But this question shews some confusion on the subject; a noise is the sensation resulting from the co-existence of several aërial “simple vibrations” of various [...] http://bit.ly/dkOr87