Lem passes along a link to a site where the natural internal vibrations of the sun are translated into sound. Stars, were they not suspended in a vacuum, would produce an enormous number of bell-like resonances which would fill the cosmos with music.
Follow the links and you can hear some of the solar resonances. As you listen to them imagine what these would sound like, if they could be heard, coming from billions of stars in a single galaxy.
RLC