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Sem playing two crystal singing bowls during a private sound healing session

Rotterdam · Sound Healing

Where stillness
echoes

A place where you can allow yourself to simply be. A moment to rest, realign, and release. A place to come home to yourself.

Sound Healing · Cacao · Reiki · Writing

Tune In
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Choose your
experience

Three doors into the same stillness. Open the one that calls you. The details and booking live one step deeper.

Sem with arms outstretched over crystal singing bowls during a private sound healing session
01

Personalized Private Session

Some things only want to surface when the space is entirely yours. I shape this session around whatever you bring that day: alone, with someone you love, or with your own small circle.

Explore & book →
Hands hovering just above the body during a Reiki session
02

Reiki Session

Sometimes the deepest work is the quietest. You simply rest, and I listen with my hands to what your body is holding. Nothing to do here, only to receive.

Explore & book →
A group sound healing session in the Tune In space in Rotterdam
03

Group Sound Healing

What a room of people breathing in the same sound does is hard to put into words. Cacao, intention, the bowls, and you leave feeling more grounded, clear, and aligned.

Explore & book →

Held, just for you

Every private session is shaped around what you bring that day: crystal singing bowls, ceremonial cacao, my voice, and space to land. Come alone, with someone you love, or with your own small circle.

Sound healing is not about doing, but about receiving. The vibrations are a gentle reset, helping your nervous system relax and your energy rebalance. It is not a medical treatment, but a supportive tool for wellbeing.

Sem seated cross-legged with a hand on her heart, surrounded by crystal singing bowls
One-on-One

One-on-One Session

Your body, your rhythm, your intention. A full sound ceremony, held for you alone.

From €99

Book your session
Two people sitting side by side among candlelit crystal singing bowls at a Tune In session
For Two

Sound Healing for Couples

A ceremony for two, shaped around the themes you want to experience together.

From €120

Book your session
The Tune In space set with crystal singing bowls and candles, ready for a private group
Your People

Your Own Circle

Your own people, your own date. A full ceremony, held just for your circle.

From €130 (depending on group size and location)

Book your session

Before we begin, we talk through the themes you want to work on and the intentions you want to set, so I can shape the meditation and the whole session around exactly what you need.

We open with a cup of ceremonial cacao and an intention-setting meditation. From there the sound carries you: crystal singing bowls are at the heart of the session, worked with intuitively alongside tuning forks, wind gong, chimes, and voice. Afterwards there is quiet time to reflect, so you can anchor what came through before you step back into your day.

Before we begin, we talk through the themes you want to experience together and the intentions each of you brings, so I can shape the meditation and the whole session around the two of you.

We open with a cup of ceremonial cacao and an intention-setting meditation, side by side. Then the sound journey begins: crystal singing bowls are at the heart of the session, worked with intuitively alongside tuning forks, wind gong, chimes, and voice. You each receive it in your own way, and we close with quiet reflection, with space to share with each other if you want to.

Before we begin, we talk through the themes your circle wants to work on and the intentions you want to set, so I can shape the meditation and the whole session around your group.

You choose the date and bring your people. We open with a cup of ceremonial cacao and an intention-setting meditation, then move into the sound journey: crystal singing bowls are at the heart of the session, worked with intuitively alongside tuning forks, wind gong, chimes, and voice. We close with reflection and time to land back together before you head home.

Booking is simple: send your request with the dates that suit you, and I'll personally confirm within a day or two. Coming with a partner or your own circle? Mention who you're bringing in your message, and the session will be ready for exactly that.

Quiet hands,
deep rest

Reiki is gentle, hands-on energy healing. Where sound moves through the whole room, Reiki is close and still: you rest, and I work with what your body is holding. On its own or as a quiet deepening of the sound work.

It's a Japanese practice, developed in the early twentieth century, and the name says what it is: "rei" means universal, "ki" means life energy. Reiki works with the idea that this energy flows through the body, and that stress, emotion, and holding on can leave it stuck. During a session I place my hands lightly on or just above the body, inviting that energy to settle and move again. I practice at Reiki Level 1.

A session is simple on your side: you stay fully clothed and lie down comfortably, wrapped in blankets. We take a short moment to arrive and set an intention, and then you rest while I work slowly along the body's energy centers, the chakras. People often notice warmth, tingling, or simply a deep drop into rest. We close gently, with time to reflect on what you noticed.

Like the sound work, Reiki is not a medical treatment and never a replacement for medical care. It is a supportive tool for wellbeing: a way to give your system full permission to rest, soften, and rebalance.

Hands hovering just above the body during a Reiki session
One-on-One

Personal Reiki

A one-on-one Reiki session in my home studio (Reiki Level 1). You rest, warm and held, while I work with what your body is carrying. Restorative and unhurried.

Coming soon

Book your session

Group sound healing
in Rotterdam

A group sound bath is something you can't quite explain until you've been in one. We open with ceremonial cacao and a moment to set your intention. Then the crystal singing bowls take over, and I work intuitively with tuning forks, wind gong, chimes, and voice alongside them, until the whole room softens into the same slow rhythm. We close gently, with journaling and reflection.

Sound healing is not about doing, but about receiving. The vibrations are a gentle reset for your nervous system. It is not a medical treatment, but a supportive tool for wellbeing.

Sessions gather around the new and full moon, in a warm, candlelit space in Rotterdam. Small and intimate by design. Three ways to join:

The Tune In ritual altar with crystals, a candle, and crystal singing bowls in warm light
Private · Your Date

Your Own Circle

A private group sound healing for people who already know each other: friends, family, colleagues. You choose the date, I set the room for your circle only.

From €130 (depending on group size and location)

Book your session
Sem smiling with a small circle of guests during an intimate sound healing session in Rotterdam
6–8 People

The Intimate Circle

A small open group, six to eight people. Close enough to feel held, open enough to meet someone new. Timed to the new or full moon.

€33–44, see Events for the exact price

Book your session
A larger group sound bath gathering in candlelight at Tune In in Rotterdam
15–20 People

The Gathering

The larger ceremony: fifteen to twenty people breathing in the same sound. Community energy, still personal. See Events for the next date.

Price varies per event, see Events

Book your session

Looking for a sound healing experience for a birthday, team day, or a treat? Your Own Circle is made for exactly that. Reach out and we'll shape it together.

Every session here is scheduled around the moon and the Tzolk'in, the ancient Maya calendar. This is where today lands.

The Moon

Tonight's sky

The Tzolk'in

Practice for Today

The Tzolk'in

A calendar of quality, not quantity

The Tzolk'in is the sacred 260-day calendar of the Maya. It weaves two cycles into each other: thirteen tones and twenty day signs, the solar seals. Every combination of tone and seal is unique, so no day repeats for 260 days.

Each day, the tone shapes how the seal's energy expresses itself. The tones move like a wave: beginning in unity, moving through challenge and growth, and arriving at transcendence before the wave begins again.

Where our calendar measures time, the Tzolk'in describes its character. That is how it is used here: as a daily compass for planning, creating, and resting, and as part of how each session finds its moment and its theme.

It also comes full circle in the room itself: the ceremonial cacao that opens every session is sourced from Maya communities, connecting the practice back to the same roots.

Today is all about

Journal Prompt

Do's & Don'ts

Do:

Don't:

When we gather

Sessions are held roughly once a month, timed to the new moon or full moon rather than a fixed calendar date. Each moon carries its own energy, and we follow that flow together: the moon sets the moment, and we build our session from there.

Wed, August 12 · 7:30–8:30 PM

New Moon Circle

Sound healing & intention setting

Cacao ceremony included

Paradijslaan 141, Rotterdam

Women only · up to 8

€33–44 · exact price on Hipsy

Book on Hipsy

Thu, August 13 · 8:00 PM

New Moon Bigger Session

Sound healing & intention setting

Paradijslaan 141, Rotterdam

Women only · up to 25

Price varies · see Hipsy

Book on Hipsy

Thu, August 20 · 8:00 PM

Moon Check-In · Bigger Session

A pause between the new moon and full moon: sound healing & intention setting, open to a bigger circle.

Paradijslaan 141, Rotterdam

Open to everyone · up to 25

Price varies · see Hipsy

Book on Hipsy

Thu, August 27 · 7:30–9:00 PM

Full Moon in Pisces

Sound healing & intention setting

Cacao ceremony included

Paradijslaan 141, Rotterdam

Women only · up to 8

€33–44 · exact price on Hipsy

Book on Hipsy

Can't make the next gathering, or would you rather have a moment that's entirely yours?

Book your own private session

Find your time

Booking a sound healing, Reiki, or group session in Rotterdam starts here. Tell me what you chose and when suits you, and I'll personally confirm back within a day or two. Nothing here books instantly: every session is prepared by hand, just for you.

Sessions are held in different locations around Rotterdam. Once your session is confirmed you'll receive an email with the address and exactly what to bring, if anything. I take care of the rest.

Come home to
yourself

I'm Sem, and Tune In grew from one discovery that changed everything for me: life is energy, the outside reflects the inside, and we are here to remember who we are so we can share our gifts.

I didn't learn that from a book first. I learned it in Bali, heartbroken after my relationship ended a month into our travels. Instead of running from the pain, I chose to feel all of it. And inside that pain I found a curiosity about the bigger picture. Quantum physics and spirituality gave me answers, and they let me turn pain into power. I was not a victim. I was being given a way back to my own truth. One more month in Bali became many more, and somewhere along the way I found a new love: life itself.

That is what coming home to yourself means here. Not fixing yourself, because you are not broken. Remembering what was already there, underneath the noise. Whatever you are carrying right now holds that same invitation.

In the three years since, everything I love has naturally come together: writing, poetry, music, the insights I share through my channel Blossem, and the sound healings I hold. Tune In is where it all unites, an experience carrying the depth of everything I've learned.

All of it came because I was brave enough to hold space for myself, to tune in to what wanted to come through. Now I would love to hold that same space for you.

Want to go deeper on your own? Visit the library.

Rotterdam, NL

Sessions are held in different locations around Rotterdam: always a still, warm room, held just for you and set with care.

You do not need to prepare anything. You only need to show up. Before your session you'll receive an email with everything you need to know, including what to bring, if anything at all. The rest is taken care of for you.

Let's talk.

Questions about a session, a gift, Reiki, or a private group or retreat booking: reach out directly and I'll get back to you.

Or write to me right here:

Email

tuneinbysem@gmail.com

Also open to collaborations of any kind, I'd love to hear from you.

Location

Rotterdam, Netherlands

Socials

@tune.in.bysem

TikTok · coming soon

Something in
you is ready.

If you've read this far, something here resonates. Trust that. Send a request with whatever feels true right now, even if it's only a feeling, and the rest will take shape from there.