The word ecdysis comes from the Ancient Greek for "stripping off" and is used by scientists to describe snakes shedding skin and insects molting exoskeletons. "Ecdysis," the third track on Deftones' 10th album, Private Music, applies the concept in a metaphorical sense to the Earth and humanity as a whole. The song starts out describing people sitting around with no purpose other than avoiding death ("Can we sit here, silent, just hoping to survive here?") while a powerful force stirs within ("A symbol of our plague, shakes our bones awake"). But the transformational impulse isn't limited to the human mind - it's in the very Earth upon which we live.
Constant rivers rising
Swollen streams dividing
Watch it cut its way through the valleys
While devouring it entirely again
Seeming to borrow the tradition of many spiritual texts, the song intertwines external physical reality with internal, symbolic reality in such a way that the border between them disintegrates. Recurring archetypes include wind, water, fire, and the town (presumably both a literal town and the mental constructs that house our personal and cultural ideological points of view).
This town becomes a lake
And it bathes our ghosts away
Ascending through our brain
Inside these winds
The lyrics are satisfyingly mysterious and ambiguous, but always the impression of cyclical transformation comes through.
The flames are alive
Reclaim their audience
These rains are divine
Reclaim their environment
A new phase arrives
Deftones frontman Chino Moreno was three years sober during the making of Private Music, a huge change (a major ecdysis, one could say) in his personal life. However, seeing as how the song was released in late 2025, it's hard to imagine it isn't addressing the massive changes that the world was experiencing at the time. Long-trusted institutions, alliances (both political and personal), and basic assumptions about reality were falling away all over the world. Except for the most stubbornly unmoved, everyone felt that the world had crossed a dividing line and could never go back. No one was sure what would emerge, but most everyone shared the feeling, vague or pronounced, that the old would never come back again. This song captures that feeling, seemingly pointing at some sort of ancient mystical impulse rising up again, through the Earth and through our brains - a global ecdysis.
On one level the song deals with a spiraling descent and reflected ascent through the brain, which brings to mind Kundalini practices of ancient Yogic traditions. It's hard to say with Moreno, though. He's discussed a personal interest in religious symbolism and various spiritual traditions, and many of his songs strongly suggest that his interest is even deeper than he's let on, but he's rarely delved too much into specifics of his studies.
Speaking to
NPR about "Ecdysis," Moreno said, "It wasn't done consciously. It's just, like, put together like bricks, you know, or like Legos even, where, you know, we were able to just, like, throw these random pieces together and make something cohesive out of it, which was really fun to do."
Given that the cover of Private Music features an albino snake, it's natural to assume that the album was made with "Ecdysis" in mind, but drummer Abe Cunningham said that it was the last song recorded for the album. The rest of the tracks had been planned out before the band ever entered the studio, but "Ecdysis" was made from scratch in one of the Nashville recording studios (Private Music was recorded in five different studios, including Rock Falcon and Sienna in Nashville).
Longtime Deftones member Frank Delgado added the song's introductory synthesizer melody after the rest of the song was written.
The first time Deftones played "Ecdysis" live was on September 20, 2025, at the
Louder Than Life festival in Louisville, Kentucky.
