This release contains only the music track from Base by Base Episode 405.

Song title: Symmetry in the Sparks
Original Base by Base episode: 405: PRDM9 and the Hotspot Trade-off

Article metadata:
Article title: On the origin of PRDM9-guided recombination hotspots
Journal: Proceedings of the National Academy of Sciences (PNAS)
DOI: 10.1073/pnas.2535682123
Reference: Úbeda F, Bürger R, Fyon F. On the origin of PRDM9-guided recombination hotspots. Proc Natl Acad Sci U S A. 2026;123(26):e2535682123. doi:10.1073/pnas.2535682123

Lyrics:
Verse 1
In the quiet split of a cell-made night,
Two threads drift close to trade their light.
Some marks are scattered, some are drawn,
A hidden map we’re walking on.

Pre-Chorus
If you bind too often, you pay the cost,
Connections blur and chances get lost.
But when the meeting’s mirrored, side by side,
That’s where the crossover can decide.

Chorus
Let it meet in symmetry, let it lock in time,
Two matching hands on the same thin line.
Even if the net runs lower, it can still ignite—
When mirrored sparks turn into new life.

Verse 2
One path aims anywhere, wide and free,
One path writes names on the genome’s sea.
And sometimes both can share the stage,
Swinging in cycles from age to age.

Bridge
On bigger strands, the pressure’s real—
Miss one exchange and the whole thing can peel.
So the system learns what it can’t ignore:
Make the surest crossover worth fighting for.

Final Chorus
Let it meet in symmetry, let it lock in time,
Two matching hands on the same thin line.
Trade a little binding for a clearer sign—
And watch the hotspots hold the line.

This release contains only the music track from Base by Base Episode 404.

Song title: DNA on the Outside
Original Base by Base episode: 404: RUNA Reveals Surface DNA on Exosomes

Article metadata:
Article title: A nucleic acid labeling chemistry reveals surface DNA on exosomes
Journal: Proceedings of the National Academy of Sciences
DOI: 10.1073/pnas.2532281123
Reference: Bošković F, Dutta Gupta P, Zhang J, Szostak JW, Krishnan Y. A nucleic acid labeling chemistry reveals surface DNA on exosomes. Proc Natl Acad Sci U S A. 2026;123(27):e2532281123. doi:10.1073/pnas.2532281123

Lyrics:
Verse 1
In the clean-room glow, in a late-night hush
Tiny parcels drift where the signals rush
We thought the message stayed sealed inside
But something bright was riding the outside

Pre-Chorus
A small switch flips with a careful heat
Mark the letters where the membranes meet
Draw the line—what’s in, what’s out
Turn the mystery into a map, no doubt

Chorus
DNA on the outside, lit like a flare
Not buried in the dark—it's hanging in the air
Tag it, trace it, watch it come alive
A hidden surface truth where the answers survive

Verse 2
Under stress, the repair lines fray and stall
And more bare strands show up on the wall
Scavenger hands reach, pull the vesicles near
And the quiet cells change gears when they hear

Bridge
From easy-going to a fighting stance
A colder calm becomes a hotter chance
Not every thread is fully understood
But the tool cuts clean where questions stood

Final Chorus
DNA on the outside, lit like a flare
A reversible mark says, “Look right there”
From damaged repair to immune rewrite
We turn a thin line into guiding light

This release contains only the music track from Base by Base Episode 404.

Song title: Scars That Tell the Truth
Original Base by Base episode: 404: HRD-GIS refines BRCA1/2 variant classification in ovarian cancer

Article metadata:
Article title: Homologous recombination deficiency-driven genomic instability in ovarian cancer as an indicator of BRCA1 and BRCA2 variant pathogenicity
Journal: The American Journal of Human Genetics
DOI: 10.1016/j.ajhg.2026.05.015
Reference: Schnaiter S., Santer F.R., Csanaky K.A., et al. Homologous recombination deficiency-driven genomic instability in ovarian cancer as an indicator of BRCA1 and BRCA2 variant pathogenicity. The American Journal of Human Genetics. 113, 1–8 (2026). https://doi.org/10.1016/j.ajhg.2026.05.015

Lyrics:
Verse 1
On bright screens in the midnight lab,
we chase a pattern we can’t quite grab.
Shattered ladders, missing rungs,
a quiet code on silver tongues.
In the wreckage, numbers glow.

Pre-Chorus
If repair goes dark, the story shows,
in loss of pieces, how it grows.
A fingerprint you can’t erase,
drawn in the genome’s broken place.
Let the signal cut through doubt.

Chorus
These scars don’t lie, they light the way,
turn the maybe into “name it” today.
When the fix is gone, the fracture’s loud,
HRD speaking through the crowd.
Hold the line—let evidence stay:
scars that tell the truth today.

Verse 2
Four cohorts singing, one refrain,
thousands of tumors in the chain.
When GIS rises past the line,
BRCA shadows intertwine.
When it’s low, the fear steps back.

Bridge
Not every variant wears a crown,
some live in grey, some won’t come down.
So we weigh the odds, we map the chance,
likelihood turning into stance.
A measured spark in clinic halls—
a clearer call when darkness falls.

Final Chorus
These scars don’t lie, they light the way,
turn the maybe into “name it” today.
High score, strong pull—support the claim,
low score can quiet a warning name.
From broken repair, a brighter view:
scars that tell the truth—break through.