Just because space is a vast vacuum does not mean there's no sound out there. In fact, Nasa developed instruments designed specifically to record the sounds that exist in space as electromagnetic vibrations.
This haunting, ambient orchestra is comprised of electromagnetic vibrations from different stars, planets, their moons, and their rings. And it makes sense that there would be "celestial music" out there- there's so much going on! Radio waves bounce between the surface and atmosphere of each planet, planetary rings release charged particle emissions, not to mention particle interactions of planets, moons and solar wind. All of this creates sound.
Thankfully we can hear some of these sounds for ourselves! Check out the video below