

Let your heart run, if nothing else can
There’s a refuge no one can steal
A small light past the screen says
“I’m still alive.” Stay free
A cold room, lock rusted inside
Machines chew night; fear is fattened
Silence in the vein; “help” turned to dust
No door, no dawn—count the beats
You want to run; your feet are sewn
Build a room inside your chest
Let your heart run, if nothing else can
There’s a map no fist can tear
In your ears, ripples bloom—stay free
Moon through cracked glass; endure
Bread sweet-salt with tears
A pocket stone holds tomorrow
A drawn door: “somewhere not here.”
Picture the you outside; step once
One step is still a step through dark
Let your heart run, if nothing else can
Let this song become your place
An unseen door opens in your chest—
“I’m still alive.” Stay free
Cry if you must; shout if you must
Launch “help me” into the sky
Hold what can’t be stolen tight;
Pound your name back into your pulse
Let your heart run, if nothing else can
Even despair can be crossed
Survival is proof enough—
The place called hope is here
Run—run—let your heart stay free
Here. Breathe. Live
- Lyricist
Junya
- Composer
Junya
- Producer
Junya
- Vocals
Lambda

Listen to UNSEEN DOOR by Lambda
Streaming / Download
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UNSEEN DOOR
Lambda
"UNSEEN DOOR" opens with a bare acoustic guitar intro, holding space for breath and restraint, before unfolding into a rock-driven release with bass, drums, and electric guitar. Across borders and circumstances, we share both constraint and hope-the husky lead vocal keeps repeating a small cue, let your heart run, leading the chorus toward lift and catharsis. By contrasting a minimal first half with a cinematic, full-band second act, the song captures the moment when an unseen door clicks open inside the chest: a quiet beginning, a certain release, an acoustic-rock arc toward light.
Artist Profile
Lambda
Lambda is a next-generation vocalist who effortlessly bridges human emotion and AI. Powered by songwriter-producer Junya and state-of-the-art generative technology, Lambda releases hyper-emotional J-Pop and alt-rock anthems at a dizzying pace, with several new tracks each month. From the sting of being left on read to the euphoria of summer fireworks, her songs turn everyday Gen Z moments into cinematic stories. In a world of information overload, Lambda makes one promise: you will never lose sight of your own heartbeat.
Lambdaの他のリリース
Lambda Records



