Dual Frequencies Live at Rote Fabrik: Sound Meets Heritage
- Martina Knecht 
- Oct 12
- 3 min read
Updated: Oct 22
An interview by Martina Knecht

On October 5, 2025, the air at Rote Fabrik shimmered with anticipation as Dual Frequencies — the duo of Dudu Alvear and Ery Mancini — prepared to take the stage. Once an old silk factory on the shores of Lake Zurich, Rote Fabrik has, since the 1980s, stood as a symbol of artistic freedom and experimental culture. Its industrial walls have hosted generations of musicians and artists unafraid to cross boundaries — and that evening, those same walls were about to resonate with a new kind of dialogue: a meeting between electronic soundscapes and Afro-Cuban rhythm.
When the performance began in Rote Fabrik’s Clubraum, the audience entered a world of evolving sound. Layers of synths and samples unfolded like waves, pulsing against Mancini’s deep rhythmic language. Entirely improvised, the concert transformed Night in Hong Kong into something fluid and alive — an hour-long conversation between structure and spontaneity.
The music drifted between meditative calm and kinetic energy: digital fragments echoing through Afro-Cuban grooves, subtle harmonic shifts giving way to bursts of rhythm and light. Alvear’s precise manipulation of texture met Mancini’s instinctive timing, creating moments of tension and release that felt both meticulously crafted and entirely in the moment.
It was more than a concert — it was an act of listening, of dialogue, of presence. As the final frequencies faded and the crowd erupted in applause, the sense of connection lingered. For one evening, Rote Fabrik became a space where cultures intertwined, and sound itself became a form of storytelling — a reminder that in music, as in life, boundaries are meant to dissolve.
The Artists Behind the Frequencies

Ery Mancini (aka Heribel Izquierdo) is an Italo-Cuban musician based in Zurich, acclaimed for his versatility as a percussionist, arranger, and conductor. A graduate of the Lucerne School of Music, he has built a career that moves fluidly between jazz, salsa, pop, and experimental electronic performance. His music transforms rhythm into narrative, bridging acoustic and digital worlds with equal precision and passion. Whether on stage with ensembles like Lele Gorri and the José Pino Trio, or shaping new sonic landscapes through live electronics, his work is a celebration of rhythm, heritage, and imagination.

Dudu Alvear (aka José Pino), a Zurich-based sound artist, guitarist and composer from Ecuador, brings a global sensibility to contemporary electronic music. With formal studies in electroacoustic composition and sound synthesis at the Zurich University of the Arts, his music merges Latin American roots with avant-garde experimentation. His latest album, Night in Hong Kong, captures that fusion — an intricate journey through sound and emotion, where technology and culture meet. Beyond Dual Frequencies, Pino leads several jazz ensembles and directs the czltural platform La casa de nadie.



















