Bith

Bith were one of the galaxy's most ancient civilizations, with a history going back millions of years. Their society was highly regimented, with everything from mate selection to political leadership controlled by sophisticated computer programs.
Bith were a peaceful, highly evolved craniopod species native to the planet Clak'dor VII or Bith. Fully adapted to a civilized, high-technology lifestyle, Bith were found galaxy-wide at all levels of society, most notably as engineers, scientists, intellectuals, consultants, and musicians. 
Bith could sense the tonal qualities of sound as well as other races sensed colors. Their eyes, as big as a Menahuun's, were able to focus to 0.07 on the Gandok Scale, and they could see microscopic details of nearby objects, but were extremely nearsighted as a result. An interesting side effect of their incredible sensors was the effect of sonic grenades, or screamers, on them. It was described as causing their heads to explode.