Like many laymen with a passing interest in the epic scales and strange phenomena outside our little planet's atmosphere, there are things out there that I find both fascinating and frightening. Among them are those unusual events that do funny things with the electromagnetic spectrum. Since the invention of the telescope, people have been used to the idea of visually observing the cosmos. More recent inventions also allow us to detect energy emissions in the universe via audible signals as well. Some of them can be downright musical. Here are few to consider:
Dawn Chorus
If you downloaded from the above link, what you're hearing is known as "Dawn Chorus". It is phenomenon believed to be related to electrons as they pass through Earth's Van Allen Belts. It gets its name from a behavior of common song birds to begin chirping in distinct tones when they are first exposed to sunlight in the morning. Generally this behavior is linked to territoriality and mate attraction.
The cosmic dawn chorus, while currently unexplained, has one predominant theory attached to it. As the Earth is bathed in solar radiation, high-energy electrons begin passing through the atmosphere. Some of them inevitably get caught in the magnetic fields of the planet's protective Van Allen Belts. As the electrons tumble to Earth, they create strange radio waves that can be detected with certain kinds of radio equipment. Whether or not that theory has it right, there's no doubt that the dawn chorus phenomenon is linked to solar radiation. A similar event occurs during periods of aurora and are more frequent during magnetic storms.
Pulsars
When a star goes supernova, it isn't exactly a star "exploding" in the traditional sense of combustion-based explosions. Remember that stars are just giant balls of super-heated gas of various elements. A supernova is the immediate, violent sloughing of the majority of that gas. What stays behind is a solar core, an extremely dense orb of gas that emits very powerful waves of energy. These are neutron stars. Often times the density of these neutron stars causes them to rotate at incredible rates, as much as 600 rotations per second. That is roughly 1/7 the speed of light. Because of this extremely fast rotation, the energy the star emits is focused into two beams at the star's poles. These aren't exactly solid beams. Rather, they are "pulses" of energy that come at regular intervals. When observed from Earth, pulsars look like they're blinking.
Because many pulsars emit energy at radio wavelength (in addition to gamma an X-ray), some instruments can pick up their energy pulses in the form of sound. Notice in the linked sound clip how the intervals between pulses can actually be heard in the form of alternating tones and chops between tones.
Lessons like these are important for anyone who wants to truly understand cosmology and astrophysics. We humans tend to understand the world as if it exists in segments that just aren't present. Sight and sound are our brains' ways of interpreting related phenomena. Both light and sound exist on the same section of the EM spectrum. It's all just radio waves.