This release contains only the music track from Base by Base Episode 30.

Song title: The Quiet Switch
Original Base by Base episode: 30: Bi‑allelic POPDC2 variants and a recessive cardiac conduction syndrome

Article metadata:
Article title: Bi-allelic variants in POPDC2 cause an autosomal recessive syndrome presenting with cardiac conduction defects and hypertrophic cardiomyopathy
Journal: The American Journal of Human Genetics
DOI: 10.1016/j.ajhg.2025.04.016
Reference: Nicastro M, Vermeer AMC, Postema PG, et al. Bi-allelic variants in POPDC2 cause an autosomal recessive syndrome presenting with cardiac conduction defects and hypertrophic cardiomyopathy. The American Journal of Human Genetics. 2025;112:1–18. doi:10.1016/j.ajhg.2025.04.016

Lyrics:
Verse 1
In the quiet muscle where the lightning lives,
A tiny signal slips, a fragile rhythm gives.
Two hidden letters in the code align,
And the hallway heartbeat loses track of time.

Pre-Chorus
We trace it through the long-night glow of screens,
Through looping lines and in-between.
A missing grip on what should hold so tight,
And every pause is louder than the night.

Chorus
Turn the current back on, let it run, let it run,
When the pulse goes low, we follow where it’s from.
If the switch won’t bind, the drum can’t find its way,
But we named the break—now we can light the relay.

Verse 2
Models in the shadows show the pocket’s flaw,
cAMP can’t land where it used to draw.
And channels meant to breathe, to keep the tempo free,
Go still—no lift in the TREK-1 sea.

Bridge
In the node where timing learns to start,
A few cells hold the map of every heart.
Not everyone who carries it will fall,
But for some, two echoes silence the call.

Final Chorus
Turn the current back on, let it run, let it run,
When the pulse goes low, we follow where it’s from.
From the membrane fade to the wire that frays,
We named the break—now we can change the days.