← The Solar System

Moon · orbits Jupiter

Io

Four Hundred Mouths

JupiterIoEuropaGanymedeCallisto
Io around Jupiter, with Europa, Ganymede, Callisto. Drawn to be seen, not to scale: the order and the direction are real.

4 takes — the first is the one in the edition

Io: the most volcanically active world we know, kneaded by Jupiter's gravity until it burns.

What the song is built on

  • The most volcanically active world we know
  • More than 400 volcanoes, some throwing plumes 300 km high
  • Jupiter's pull kneads its insides and keeps it molten
  • Sulphur paints it yellow, orange and red

Established astronomy. The music is an interpretation of it — see the curatorial policy.

SoundIndustrial rock with molten synth bass, hammered metal percussion, eruptive dynamics, gritty male vocal, 128 BPM, volcanic and relentless

Lyrics
[Intro] Pull me. Squeeze me. Watch what comes out. [Verse 1] Four hundred volcanoes on a world this small Plumes three hundred kilometres high Sulphur falling back as yellow snow A new surface every time you look up at the sky Jupiter has me in a fist Europe and Ganymede pull the other way My insides never get to rest I am kneaded into fire every day [Chorus] Four hundred mouths and all of them open Four hundred throats and all of them loud Nothing on me is older than a moment I erase myself and start again out loud [Verse 2] No crater keeps its name on me The lava buries every scar Loki Patera, a lake of fire Wider than some countries are Galileo saw me in sixteen ten A point of light that moved and stayed One of the four that broke the sky And showed the Earth was not the centre of the play [Bridge] Tidal heating, that's the phrase It means: held too close, too long Beauty made of being pulled apart And turning it into a song [Final Chorus] Four hundred mouths and all of them open Four hundred throats and all of them loud Nothing on me is older than a moment I erase myself and start again out loud [Outro] Pull me. Squeeze me. I'll keep burning.

Io goes round

Solar System — 2026 Founding Edition — one of 30 songs.