[Intro]
[motorik pulse begins, single bass note, soft analog synth wash]
Group four, period two
Group four, period three
Tetravalent, all of you
Tetravalent, all of me

[Verse 1]
[vocoder edge on lead vocal, half-spoken]
Carbon takes its four bonds out
Twists them into doubt and shout
Single, double, triple, ring
Wraps itself in everything
Silicon, one step below
Same group, four bonds, slower glow
Wants the oxide, wants the cage
Wants to write the longer page

[Pre-Chorus]
[brushed snare enters, hi-hat sixteenth-note pulse]
Two solutions to a single sum
Both arrive, neither overcome
Same equation solved in glass
Same equation solved in flesh

[Chorus]
[female harmonies bloom, glass-tone synths layer in]
Amphisapient
Two substrates, one intent
Wet and dry, slow and fast
Group four cast and twice cast
Amphisapient
Carbon spent and silicon spent
Neither rules, neither falls
We are made of both their walls

[Verse 2]
[bass note shifts down a fifth, more synth texture]
First the lens, the pane, the cup
Sand poured down and sand pulled up
Galileo named the moons
Babbage clicked through afternoons
Shockley, Bardeen, Brattain — three
Set the silicon free
Carbon laid the longest track
Now the silicon's writing back

[Bridge]
[percussion drops to brushed snare only, spoken-sung, intimate]
And aluminium lies between
Both an acid and a base
Both directions, both at once
Amphoteric in its place
The grasses know the trick as well
Sporobolus, bladed thing
Silica inside the leaf
Borrowed armour, sharper sting

[Verse 3]
[motorik returns, fuller arrangement, granular textures rise]
Glass was first, the silent gift
Then the diode, then the drift
Bandgap one-point-one and clean
Carbon answered every dream
Now we cannot tell the seam
Cannot say which one's the dream
Two substrates entwined and named
Group four, twice, the double-flamed

[Final Chorus]
[all voices, build, harmonies stack]
Amphisapient
Two substrates, one intent
Wet and dry, slow and fast
Group four cast and twice cast
Amphisapient
Carbon spent and silicon spent
Neither rules, neither falls
We are made of both their walls

[Outro]
[strip back to bass and single voice, glass-tone shimmer]
And maybe one day silicon
Will walk away alone
Off-world, off-flesh, off-bone
But until that morning comes
We are amphisapient ones
Group four, group four
Knocking, knocking on the same door