Relaxing Song

By Bajune Tobeta
Tokyo, May 2026

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SUMMARY

In 2011, Marconi Union released “Weightless,” a composition
commissioned by the British spa brand Radox and scientifically
validated by Mindlab International as “the most relaxing song
in the world.” It has since accumulated hundreds of millions
of streams, over 500 million TikTok views, and clinical
research at the University of Pennsylvania has demonstrated
that it produces anxiolytic effects comparable to midazolam
in preoperative settings.

Fifteen years later, I have released a composition designed
to go beyond it.

This article explains, in detail, the five acoustic-science
limitations of Weightless that have become apparent in 15
years of subsequent research, and the design choices made in
this new work to address each of them.

For reference, the original work:
▶ Marconi Union — “Weightless” (Official Video)

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WHY WEIGHTLESS NEEDED AN UPDATE

Weightless was a landmark composition. Its design — a tempo
gradient from 60 BPM to 50 BPM, the absence of repeating
melodic motifs in its primary structure, and the use of
randomized chime tones to interrupt cognitive prediction —
was based on the best understanding of sound-therapy
principles available at the time, articulated by Lyz Cooper,
founder of the British Academy of Sound Therapy.

Since 2011, however, peer-reviewed acoustic research has
substantially advanced. Five specific limitations of the
Weightless design have become apparent:

1. Standard tuning (A=440Hz)
Weightless uses the modern concert pitch standard. A growing
body of research suggests that compositions tuned to A=432Hz
produce measurably lower physiological arousal, including
reduced heart rate and blood pressure.

2. Beat presence (60→50 BPM)
The descending tempo gradient was designed to entrain the
listener’s heart rate downward. However, the persistent
presence of a bass-drum pulse continues to occupy the
auditory cortex’s rhythm-tracking circuits, which may prevent
the deepest states of parasympathetic dominance.

3. Absence of binaural entrainment
Binaural beats — the perception of a third frequency created
when each ear receives a slightly different tone — were not
implemented in Weightless. Subsequent EEG research has
documented that binaural beats in the alpha band (8–13 Hz)
can induce alpha-wave dominance in cortical activity.

4. Silent noise floor
Weightless has no broadband noise component. Pink noise
(1/f spectral distribution) has since been demonstrated to
enhance slow-wave sleep and memory consolidation in
controlled clinical studies.

5. Repeating motifs
While Weightless minimizes melodic repetition, certain motifs
do recur within its 8-minute structure and across its
10-hour extended version, which uses looping. The brain
learns these patterns and begins predictive processing,
which re-engages cognitive activity that the composition
seeks to suspend.

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THE NEW DESIGN

This composition, released in May 2026, addresses all five
limitations.

Tuning

A=432Hz fundamental tuning, with a 528Hz solfeggio frequency
layer present throughout.

Rhythm

No beat. The composition has no bass drum, no kick pulse,
and no percussive layer of any kind. The acoustic field is
purely ambient, allowing the autonomic nervous system to
settle without rhythmic anchoring.

Binaural Entrainment

Left ear: 58.725 Hz
Right ear: 66.555 Hz
Difference frequency: 7.83 Hz

The 7.83 Hz difference corresponds to the Schumann resonance,
the natural electromagnetic resonance frequency of the
Earth’s ionosphere, which falls within the alpha-wave EEG
band. This specific frequency was chosen to align cortical
entrainment with the geophysical baseline.

Headphones are required for this layer to function.

Noise Floor

A constant 1/f pink noise bed underlies the entire
composition, calibrated to be present but non-intrusive.

Melodic Structure

The composition runs 10 hours without a single melodic loop.
Every phrase is unique. The listener’s brain cannot establish
a predictive model of the next event, which has the effect
of suspending the default-mode network’s anticipatory
activity.

Layer Architecture

L1: Tempo map (variable, sub-50 BPM equivalent)
L2: Binaural beat layer (Schumann resonance 7.83 Hz)
L3: PAD ambient source material
L4 + L5: Spatial panning and dynamic mix control

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ABOUT THE COMPOSER

Bajune Tobeta is a Tokyo-based composer and acoustic
researcher with a thirty-year career spanning ambient
composition, electronic music, and international
collaboration.

His solo works have featured guest performances by Ryuichi
Sakamoto, Yukihiro Takahashi (Yellow Magic Orchestra),
Taeko Ohnuki, CHARA, and Lisa Ono — among many of Japan’s
most significant musicians. He has also collaborated
internationally with Christian Fennesz, Arto Lindsay, Joyce
Moreno, and Jacques and Paula Morelenbaum.

His upcoming releases include the single “After the Silence”
featuring Christian Fennesz (June 26, 2026) and the EP
“Anechoic” (August 14, 2026), mastered by Denis Blackham at
Skye Mastering. The EP targets consideration for the 69th
Grammy Awards. A forthcoming Sergio Mendes tribute album,
featuring Graçinha Leporace (Mendes’s widow) on the iconic
track “Mas Que Nada,” was recorded at Remote Control
Productions in Los Angeles (Hans Zimmer’s studio).

He composed the original soundtrack for the Namco/Bandai
Namco game “Katamari Damacy” and its sequels. He is a
member of JASRAC and RIAJ.

He is the Representative Director of CROIX Co., Ltd., the
parent company of the Musiora™ functional sound protocol
and the nemcaro wellness brand.

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TECHNICAL FRAMEWORK

This composition is built on the Musiora™ protocol, a
functional sound design framework developed by CROIX Co.,
Ltd. that specifies acoustic parameters for autonomic-
nervous-system intervention through music. The framework
integrates clinical acoustics, psychoacoustic research, and
contemporary spatial audio standards.

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LISTENING INSTRUCTIONS

This work is designed for deep relaxation and sleep
induction. Please observe the following:

• Use headphones. The binaural entrainment layer does not
  function without separated left/right channels.
• Listen at low volume (40–55 dB SPL).
• Do not listen while driving or operating heavy machinery.
  The composition is designed to induce parasympathetic
  dominance rapidly and may cause involuntary sleep within
  eight minutes.
• For maximum effect: lie down, close your eyes, and do not
  engage in physical activity.

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DATA COLLECTION

Listeners are invited to share their experiences in the
YouTube comments. Specifically:

• Heart rate change (pre/post)
• Time to sleep onset
• Subjective relaxation rating (1–10)
• Any unusual sensory phenomena

This community data will inform subsequent design iterations
and is being aggregated as preliminary research material for
collaboration with medical fellows.

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LISTEN

The full 10-hour composition is available on YouTube:

▶ Bajune Tobeta — Beyond Weightless (10 Hours)

For reference, the work discussed in this article:

▶ Marconi Union — Weightless (Official Video)

Listeners comparing the two works are recommended to
listen to Weightless first, then this composition. The
design choices become most apparent in direct contrast.

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Additional releases by Bajune Tobeta:
— “After the Silence” feat. Christian Fennesz
(single, June 26, 2026)
— “Anechoic” (EP, August 14, 2026, mastered by Denis
Blackham at Skye Mastering)

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