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[Interview] How Japanese musician Grover turned his passion of ‘sound’ into a health-tech startup

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JStories ー For over 20 years, Yoshikazu Grover — higher identified merely as Grover — has been a well-recognized voice and face in Japan’s media business. As a musician and radio character, his profession has been all concerning the energy of sound.

Musician and radio character Yoshikazu Grover speaks to JStories as he prepares to showcase his health-tech app at Tokyo’s Sushi Tech startup occasion, which is able to begin on Might 8.        Photograph by Emi Takahata | JStories

Now, Grover is taking up a brand new function: tech entrepreneur.

He’s channeling his lifelong love of music into Fillgoo, a brand new health-tech app designed to measure how listening to music impacts your temper and nervous system.

Can music actually heal? Grover believes it may possibly

Grover has lengthy felt that music does greater than entertain — it may possibly heal.

He saved questioning: What if expertise may truly measure the optimistic emotions folks expertise after listening to sure songs?  Might this knowledge be used to assist folks select music that lifts their temper or helps them loosen up?

Over the previous few years, he has developed Fillgoo (a playful tackle “Really feel Good”). The app makes use of a smartphone’s digicam to detect adjustments within the person’s autonomic nervous system — particularly by measuring blood move and pulse — earlier than and after listening to a music.

The app’s prototype is already out there for iOS customers. Ultimately, Grover hopes customers will have the ability to share their knowledge and even see music rankings primarily based on how a lot they enhance listeners’ moods or rest ranges.

The app’s prototype is now available for iOS users.       
The app’s prototype is now out there for iOS customers.       

The app assesses changes in users’ moods before and after listening to music by measuring variations in blood flow and pulse.   
The app assesses adjustments in customers’ moods earlier than and after listening to music by measuring variations in blood move and pulse.   

Grover, lead vocalist of Jackson Vibe, identified for his or her signature music ‘Asayake no Tabiji’ (‘Journey at Daybreak’).      Supply: YouTube 

Grover (left), host of the radio program Jam the Planet on J-WAVE (81.3FM), alongside the author (right), appearing as a news commentator in his capacity as JStories executive editor.     Photo by JStories
Grover (left), host of the radio program Jam the Planet on J-WAVE (81.3FM), alongside the creator (proper), showing as a information commentator in his capability as JStories government editor.     Photograph by JStories

From artist to entrepreneur: What impressed the leap?

Grover traces his entrepreneurial journey again to a strong expertise a decade in the past.

In 2014, he watched Alive Inside, a U.S. documentary displaying how music remedy helped dementia sufferers rediscover reminiscences and reconnect with family members.

“Alive Inside” Official Trailer 1 (2014) – Alzheimer’s Documentary.     Supply: YouTube

“I noticed individuals who appeared unresponsive or unable to speak immediately gentle up after they heard songs from their youth,” Grover remembers. “They’d begin smiling, hugging, even dancing. I used to be deeply moved by the sheer energy of music to awaken the thoughts.”

Grover says he was deeply moved by the power of music to awaken the mind and body after watching the 2014 US documentary Alive Inside.     Photo by Emi Takahata | JStories 
Grover says he was deeply moved by the ability of music to awaken the thoughts and physique after watching the 2014 US documentary Alive Inside.     Photograph by Emi Takahata | JStories 

The COVID-19 pandemic additionally bolstered Grover’s want to construct one thing new. As many within the leisure business confronted unsure futures, he mirrored on how he may help his household — particularly his two younger daughters — if he may now not depend on music or radio work.

A household affair: brothers in enterprise, dad and mom as inspiration

Although Grover considers music his lifelong “greatest good friend,” when it got here to beginning an organization, he turned to a different trusted companion: his older brother, Kaz.

Kaz, a seasoned finance skilled primarily based within the U.S., agreed to co-found Fillgoo. He now serves as the corporate’s CEO, whereas Grover focuses on advertising and marketing and promotion as chief advertising and marketing officer.

“Enterprise was by no means my sturdy swimsuit,” Grover laughs. “However when my brother stated he noticed actual potential and supplied to take this journey collectively, I assumed — if he’s main the way in which, I’m in.”

A childhood photo of Yoshikazu Grover (right) sitting beside his older brother Kaz (left), who is four years his senior.    Source: Fillgoo website
A childhood picture of Yoshikazu Grover (proper) sitting beside his older brother Kaz (left), who’s 4 years his senior.    Supply: Fillgoo web site

Household has all the time been central to Grover’s story. His Japanese mom, a classical violinist, as soon as requested him to vary the music within the automobile from classical to Latin as a result of it reminded her an excessive amount of of a strict childhood instructor. That second bolstered for Grover how powerfully music triggers private reminiscences.

He additionally remembers recommendation from his late father, an Indian who studied in Japan, who typically instructed him, “Be blissful, all the time.”

That straightforward message impressed Grover to embrace what his father known as “Comfortable Remedy”—a philosophy now embedded into Fillgoo’s mission.

What’s subsequent for Fillgoo? Massive goals, beginning in Tokyo

Fillgoo stays in its early phases. The app remains to be a prototype, and the crew is actively creating its enterprise mannequin and in search of companions.

One formidable purpose: serving to Japan, a quickly ageing society, construct a music-based wellness ecosystem. By selling well being by music, they hope to scale back healthcare prices — and even perhaps create a brand new income stream for songwriters and musicians.

Grover’s crew can be exploring collaborations with wearable tech firms. Whereas the present app makes use of a smartphone digicam for measurements, future variations might collect knowledge by smartwatches or rings.

The author (left) and Grover (right) discuss Fillgoo’s vision of a music-based wellness ecosystem to support healthy aging in Japan.    Photo by Emi Takahata | JStories
The creator (left) and Grover (proper) talk about Fillgoo’s imaginative and prescient of a music-based wellness ecosystem to help wholesome ageing in Japan.    Photograph by Emi Takahata | JStories

This month, Grover will showcase Fillgoo at SusHi Tech Tokyo 2025, one in all Japan’s greatest international startup occasions. He’ll personally introduce the app to guests from world wide.

“It’s thrilling — and a bit nerve-wracking,” Grover says. “However I can’t wait to satisfy folks, hear their reactions, and see how Fillgoo would possibly assist them in their very own lives.”

Prime video: Giulia Righi (JStories)

For inquiries relating to this text, please contact [email protected]

Click on right here for the Japanese model of the article



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