Sit in enough ayahuasca ceremonies and you start to notice something odd. The medicine gets most of the credit — the vine, the brew, the visions. But the thing that actually steers the night, the thing that decides whether you sink into stillness or spiral into chaos, is often the music. Specifically, the icaros the shaman is singing over you at three in the morning while you're trying to remember your own name.

This is the piece of the ayahuasca experience that gets talked about least in glossy retreat brochures. And it's arguably the most important variable in the whole equation. So let's talk about it honestly — what icaros actually are, why musicianship matters so much, and how to gauge whether the ceremony you're considering is being held by someone who knows what they're doing musically, or someone who's winging it with a rattle.

What Icaros Actually Are

Icaros are the medicine songs of the Amazonian curanderos. They're not entertainment. They're not background ambience. In the traditional Shipibo, Asháninka, and mestizo lineages, icaros are considered the working tool of the ceremony — the way the shaman navigates the space, calls in specific plant spirits, protects participants, moves stuck energy, and closes the doors when it's time to come back.

Each icaro is learned in dieta, the long solo retreats a curandero undertakes with individual master plants. The song isn't composed in a Western sense. It's said to be given by the plant itself during that dieta. Which means when you hear a Shipibo maestra singing an icaro for bobinsana or ajo sacha or noya rao, you're hearing decades of relationship with those specific plants coming through her voice. That's not a marketing claim. That's the technology.

The songs work on the ceremony the way a rudder works on a boat. Fast, sharp icaros tend to intensify the visions and the movement of energy. Slow, whispered icaros settle a room down when things are getting turbulent. A skilled maestro can feel when one participant is spiralling and direct a song at them specifically — sometimes leaning right over them, singing an inch from their crown. If you've ever been on the receiving end of that, you know it's not metaphorical. Something shifts.

Why the Musician's Skill Changes Everything

Here's the uncomfortable truth: not every ceremony is held by a competent musician. Ayahuasca has gone global in the last fifteen years, and the demand for facilitators has vastly outrun the supply of people trained in the traditional song lineages. Plenty of well-meaning facilitators know how to brew the medicine, hold a container, and offer beautiful integration circles the next day. Fewer have spent the years in dieta required to actually sing the ceremony.

What does poor musicianship look like in practice? It looks like long stretches of silence when the room clearly needs holding. It looks like the same repetitive chant looped for an hour because the facilitator only knows a handful of songs. It looks like tempo that never changes, no dynamics, no sense of when to lift the room and when to bring it down. In a strong ceremony, the music breathes. In a weak one, it drones or disappears entirely.

Participants tend to describe the difference in surprisingly consistent language. A well-sung ceremony feels held. You can let go because someone is clearly at the wheel. A poorly-sung ceremony feels loose — the medicine is there, the intention is there, but there's nothing catching you when the wave hits. That's when difficult journeys turn into genuinely difficult experiences, and integration afterwards becomes a much heavier lift.

How to Tell if a Retreat's Musicianship Is Serious

You can't fully know until you're there. But there are honest signals to look for before you book. Ask questions. A reputable retreat will answer them plainly.

• Who sings the ceremonies? Not "who facilitates" — who actually holds the music. Are they a curandero from a traditional lineage, or a Western facilitator who has apprenticed? Both can be legitimate, but the answer tells you a lot.
• How long have they been in dieta? A serious singer will have spent months, cumulatively often years, in solo plant diets. This is where the songs come from.
• How many icaros do they carry? There's no magic number, but someone with a working repertoire has dozens, tied to different plants and different phases of a ceremony.
• Is there more than one singer? In many traditional ceremonies, two or three curanderos share the singing, weaving voices across the night. This is a good sign — it means the room stays held even when one person needs to rest or attend to a participant.
• Do they use instruments alongside voice? Chakapa (the leaf-bundle rattle), sometimes flute, occasionally strings. Musical texture matters. A single voice with no accompaniment for six hours is a hard night for everyone.

Some retreats now hire visiting maestros from Shipibo communities specifically because their in-house facilitators know the medicine but not the songs. That's an honest arrangement and, done respectfully, it works well. What you want to avoid is a retreat that treats music as decoration — playing recorded ambient tracks, or leaving long silences filled only by the sound of participants purging.

What About Non-Traditional Music in Ceremony?

This is where things get interesting, and where the plant-medicine world genuinely disagrees with itself. Some contemporary ceremonies — especially those held outside the Amazonian tradition — use guitar, harmonium, mantras from Indian traditions, ecstatic vocal improvisation, or curated playlists of instrumental music. The Santo Daime church has its own elaborate hymn tradition (hinários) that's musically very different from Shipibo icaros but every bit as functional in ceremony.

Is one better than the other? Honestly, no. What matters is coherence and skill. A ceremony held with a live musician who genuinely knows how to read a room and adjust in real time is worlds apart from one running Spotify in the background. The medicine responds to intention and attention. If the music-holder is paying close attention to the room and playing from a place of years of practice, the tradition matters less than the presence.

That said, if you're specifically drawn to the Amazonian lineage — if you want the Shipibo tradition or the Peruvian mestizo tradition — then you want icaros sung by someone trained in that lineage. Don't accept a substitute and call it the same thing. They're related, but they're not interchangeable.

What to Do With This Information as a First-Timer

If you're weighing your first ayahuasca retreat, add musicianship to your shortlist of things to evaluate. Most first-timers focus almost entirely on location, price, and vibe of the marketing photos. Those matter, but they matter less than who's going to be singing over you at 2am when your ego is dissolving and you need someone to hold the shape of the room.

A few practical things to do:

1. Look up recordings of the retreat's lead singer if any exist. Many maestros have YouTube recordings or albums. Listen. If the songs move something in you now, in your kitchen, they'll do more in ceremony.
2. Read participant reports specifically mentioning the music. "The icaros were incredible" appearing repeatedly is a good sign. Its absence is telling.
3. Ask the retreat directly, in writing, about the lineage of the singers. Watch how they answer. A retreat that's proud of their musicians will tell you exactly who they are and how they trained. A retreat that gets vague is telling you something too.

The ceremony is going to ask a lot of you. Preparation, dieta, travel, money, time off work, the vulnerability of the experience itself. Give yourself the best shot by making sure the people running the room know how to sing it. If something in this piece resonates and you want to look at options where the musical tradition is taken seriously, a curated set of ayahuasca retreats can be browsed on our marketplace here.

The medicine is powerful. The songs are what shape that power into something you can actually use.