soundefine
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Music brings you back to you. — soundefine

When you're buried under everything you "have to do," it doesn't even occur to you
to check in with yourself.
Something shifts when you think, "I don't need to push myself today"
— not because anyone told you to,
but because you noticed it yourself.

soundefine uses your reaction to music as a starting point:
a way to notice your own state, and reconnect with what you're feeling.

soundefineを操作する手元

You make time for music.
But not for mental care.

Your relationship with music

0%
Listen to music
at least once a week
0%
Want to use music more
intentionally for themselves
soundefine

The reality of mental care

0%
Have used
mental health support
2.8%
Men in their
40s–50s, specifically

From a survey of 172 NEC employees

soundefine lives in that gap.

Even if you can't put it into words,
just checking how the music makes you feel is enough to start seeing yourself.

Try it now →

Even when you can't put it into words,
your reaction to the music can.

"I'm tired." Or maybe you just can't put your finger on it. Putting your own state into words can be harder than you'd think. What soundefine asks of you is simple: just turn your attention to how you react to the music. That alone can become a spark for noticing how you're doing.

The same song can land completely differently depending on your state when you hear it. A favorite song that suddenly doesn't feel right, for no clear reason — you've surely felt that before.

Approval rate for "Taisetsu na Yakusoku" by mood state
The same song lands very differently depending on how you're feeling

Feeling exhausted93.2%
Tired and needing rest87.5%
Feeling anxious or worried78.9%
Feeling irritated66.7%
Feeling calm45.5%
Feeling happy or upbeat37.5%
Feeling grateful or at peace20.0%

Track: 大切な約束 (Taisetsu na Yakusoku) / Ontama (ontama-m.com)
※ Chart illustrates monitor study results

What soundefine gives you isn't your favorite songs —
it's awareness of yourself.

Step 01
Choose how you're feeling right now
Pick the option closest to how you feel right now. Not sure? Just go with whatever's closest.
気分を選ぶ画面
Step 02
Listen, then say how it felt
Say whether it felt right or not — just as you feel it. The app keeps your answer exactly as it is.
反応を答える画面
Step 03
Keep going, and you start to see yourself
Over time, the records add up — every so often giving you a reason to pause and look back at yourself.
レポート画面

Checking in on how you felt
makes it easier to notice change in yourself.

0%
Group that checked in
after listening
noticed change
0%
Group that didn't
check in
didn't really notice

From a one-month monitor study of 165 NEC employees

For our full track record, see the News page

Music brings you back to you.

The moment you can act on how you feel, before "I have to" —

I'm tired today, so I won't push myself.
I'll hand this off to someone else.
I'll go to bed early tonight.

Small choices like these add up, day after day.
What soundefine is working toward is simple — more people making choices like that, one at a time.

How soundefine came to be.

北橋 玲実
Remi Kitahashi
CEO & Founder, soundefine

In an environment where only results mattered, I watched a capable boss — someone who was always attuned to how people around them felt — wear themselves down, and I went through a hard time of my own. At the time, I didn't even know what state I was in. In the middle of that, paying attention to how I felt when I listened to music became a spark, and slowly, I started to reconnect with myself.

Maybe there are a lot of people who don't really know their own state — the way I didn't. With that thought, I'm building soundefine.

Full profile →

Updates

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Crowdfunding — Coming Soon

Bringing soundefine to more people.

Our crowdfunding campaign is on its way. Stay tuned for more details.

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