Contours of Sound: Mapping Stanislav Grof’s Basic Perinatal Matrices (BPMs) to Journey Phases and Music Choices
The first time I really noticed music shaping a journey, it wasn’t subtle at all.
A track came in, low and slow, almost tidal, and my body reorganized around it. Breath lengthened. Images widened. The room softened at the edges. It didn’t feel like background. It felt like participation.
Since then, I’ve come to think of music less as accompaniment and more as a field. It meets the nervous system where it is and may invite it somewhere else.
For neurodivergent listeners, that invitation can land in very different ways. The same piece that steadies one person can overwhelm another. Volume, brightness, repetition, tone, cultural context, all of it has weight. It can soothe, activate, or tip a system into overload.
Over time, I found myself returning to a few maps: Stanislav Grof’s Basic Perinatal Matrices (BPMs), Helen Bonny’s early work in music therapy, and more recent models like the Copenhagen Music Program. Different traditions suggested the same underlying rhythm.
The CMP is similar to Joseph Campbell’s “Hero’s Journey” model. A journey unfolds.
It tends to open, deepen, intensify, and return… though not always so linearly in reality.
Music, placed with care, can move with that unfolding. It can gently nudge, or stir, or open space for exploration and rest. All kinds of stuff.
Why This Framework Matters
Grof’s BPMs describe recurring patterns reported by his patients in expanded states of consciousness. They trace the stages of birth, expansion, pressure, struggle, and release, yet in practice, they feel like familiar emotional or cognitive terrain: the struggle phase may represent anxiety and fear, and expansion may feel like curiosity, openness, and joy or peace.
Journey-phase models describe the same arc from another angle. Ascent. Peak. Descent. Landing. The experience of the journey may reflect the medicine’s effect as it rises, crests, and begins to fall away.
Helen Bonny was among the first to structure music around this arc. In early LSD work at the Maryland Psychiatric Research Center, she built sequences designed to evoke imagery and support emotional movement. That work later became a non-medicine modality, Guided Imagery and Music (GIM), in which music functions almost like a second therapist in the room.
More recent work, including the Copenhagen Music Program, continues this lineage. Tracks are organized by function, how they support the nervous system as intensity builds, peaks, and resolves.
Within each phase, music can take on different roles.
It can open. It can activate. It can expand. It can hold. It can move something through. It can help something settle.
The phase shapes the arc. The sequencing shapes the experience.
Mapping BPMs to the Journey Arc
When these frameworks are held together, the alignment becomes clear.
Ascent corresponds to opening and early movement
Peak holds intensity, pressure, and transformation
Descent softens into meaning-making
Landing returns the body to the room
BPM describes what is happening inside that arc.
It isn’t fixed. It moves. People shift between states, circle back, linger.
Even so, familiar patterns show up.
Strategic placement of music can support each phase and potentially meet shifts as they happen.
BPM I — Oceanic Bliss
A particular quiet shows up here.
Not silence. Holding.
Floating. Safety without effort. Sometimes warmth spreads through the body. Sometimes there is a sense of dissolving into something larger.
Music here tends to be continuous and unhurried. Long tones. Minimal rhythm. Nothing that pulls sharply at attention.
For neurodivergent listeners, predictability supports the system. Gentle transitions. Stable volume. No sudden shifts.
Trust begins here.
BPM II — No Exit
Then tightening.
Frustration and pressure without movement. Being inside something that hasn’t opened yet. Emotion can feel stuck or overwhelming. The mind looks for a way out and finds none.
A balance of pushing forward without getting overwhelmed.
Too soft, it misses the experience. Too intense, it overwhelms.
The pieces that work hold tension and containment. Harmonic density and for sensory-seekers. Slow builds. A sense of movement without resolution.
Small details become amplified. Brightness spikes. Sharp frequencies. Sudden tempo changes. Any of these can startle the system out of the process. However, some nervous systems benefit from sonic pattern interruptions to spark beginner’s mind.
Here, especially, individualized pacing becomes care.
BPM III — Struggle and Release
Then movement.
Energy builds. Emotion becomes active. Rage, grief, ecstasy, sometimes all at once. Not always comfortable, yet undeniably alive.
Music carries direction.
Rhythm emerges. Layers build. There is propulsion, even when subtle. The strongest pieces guide without overwhelming, creating a container where movement stays coherent.
For neurodivergent clients, support becomes especially important here.
Monitor your own vocal tone and breath. Give clients permission to move and space to stim, and reassurance that what is happening belongs.
Music carries the energy.
The facilitator helps it land.
BPM IV — Resolution
Then opening.
Sometimes dramatic. Sometimes quiet.
The body exhales. Tears, relief, or simple recognition that the intensity has passed.
Music becomes spacious again, though different from the beginning.
Warmer. Simpler. Often more melodic. Or more background sound. It allows the system to reorganize without asking for effort.
Meaning begins to gather here.
For neurodivergent listeners, sensitivity remains. Too much complexity can still overwhelm. Slower pacing helps. Familiar textures help. With consent, silence may help.
The system remembers how to be here again.
From Framework to Playlist
This becomes practical the moment you build a playlist.
Early tracks establish safety. Mid-phase tracks invite expansion or confrontation. Later tracks support settling and return.
A piece of music may change how it lands depending on placement, or it may seem inappropriate for certain phases.
A gentle track early on may feel empty at the peak. A track that is too powerful at the peak may overwhelm some clients.
Placement shapes the experience.
A Simple Journey Arc
Ascent – Opening (BPM I)
Gentle, spacious, predictableAscent – Activation (BPM I → II)
Subtle movement, emotional stirringPeak – Processing (BPM II → III)
Depth, tension, forward motionDescent – Integration (BPM III → IV)
Softening, coherence, warmthLanding – Reorientation (BPM IV)
Grounded, simple, steady
Risks, Ethics, and Sensory Sensitivity
Music works best as an invitation.
Something the listener can meet, not something imposed.
No track is universally right. What feels expansive to one person can feel intrusive to another. For neurodivergent listeners, that difference can intensify.
Screening a client’s sensory profile and previewing playlist design intention can help foster trust and safety. Does the client need predictability, gradual transitions, or no saxophones?
It is possible to co-create playlists with clients or to allow them to preview the playlist's tone. An agreement on hand signals for volume adjustment or skipping tracks can give a client a sense of agency over their experience.
Cultural context also carries weight. Lyrics, religious tones, and stylistic cues all bring associations. Leaving space for both familiarity and novelty allows the listener’s meaning to emerge.
Frameworks like BPM are maps.
Useful, but not a requirement. Feel free to explore your own approaches.
Closing Reflection
When a track lands at the right moment, it feels like recognition. Something internal finds a shape it can move through.
When the music fades, that shape remains.
The breath is different. The body is quieter. A quiet sense of completion moves through.
The playlist ends.
The nervous system keeps listening.