AGGREGATE
Computer-Controlled Pipe Organ Music in Berlin
The AGGREGATE Festival, curated by gamut inc, is Berlin’s annual festival for new music for computer-controlled pipe organ. Since 2021, it commissions and presents works at iconic venues including Kaiser Wilhelm Memorial Church, Auenkirche, and St. Hedwig’s Cathedral — building a sustained body of repertoire at the intersection of electronic music and the organ.
Over five editions, AGGREGATE has worked with artists including Mark Fell, Ellen Arkbro, Jessica Ekomane, Rrose (Seth Horvitz), Jasmine Guffond, Stefan Fraunberger, Sollmann Sprenger, Nils Henrik Asheim, Robert Lippok, Hampus Lindwall, and Robert van Heumen. For its fifth anniversary in 2025, the festival opened the Monat der zeitgenössischen Musik. A selection of the commissioned works were released the same year as the double CD AGGREGATE – new works for automated pipe organs on Wergo.
AGGREGATE concert series (since 2018) 2021 2022 2023 2024 2025
“The three day Aggregate Festival is a local manifestation of an ongoing European endeavour
by Gamut Inc, the duo of Marion Wörle and Maciej Śledziecki, who present works that take advantage of the infinite possibilities of computer-driven pipe organ music.”
Peter Margasak, The Wire
“The AGGREGATE Festival—through its concerts as well as its lectures and discussions—continues to contribute to the emancipation of the organ from its Christian, sacred context and the hegemonic structures in which the instrument has historically been entrenched.”
Julian Mülle, Neue Zeitschrift für Musik
AGGREGATE Festival 2026
In the 26/27 season, gamut inc is Ensemble in Residence in the organ series of the Konzerthaus Berlin. Over the course of the residency we accompany the MIDI-fication of the Jehmlich organ and present a series of hyperorgan projects in the Great Hall — beginning with the opening of the sixth AGGREGATE Festival on 30 September.
This year’s edition traces a line from the origins of computer music to the hyperorgan of today, with two of the field’s pioneering voices — Laurie Spiegel and Tristan Perich — at its centre.
Collaboration with Laurie Spiegel
Together with Laurie Spiegel, we have recently begun working on adaptations of The Expanding Universe — composed on Bell Labs’ GROOVE system and a milestone of electronic music. In exchange, we are transcribing a selection of her electronic works for the hyperorgan.
Line-up & Tickets
September 30th 2026
The first evening of the AGGREGATE Festival at the Konzerthaus Berlin spans the arc from the beginnings of computer music to the hyperorgan of today — with Laurie Spiegel & gamut inc, electronic musician Rrose and the duo Sollmann Sprenger. And gamut inc´s BLACK SQUARE organs can hardly wait to face the freshly MIDI-fied Konzerthaus organ.
October 1st 2026
The following day — alongside a new work by Mexican composer Mauricio Silva Orendain and a collaboration between cathedral organist Marcel Andreas Ober and electronic musician Benjamin Geyer — Tristan Perich’s large-scale Infinity Gradient for organ and 100 loudspeakers resounds in St. Hedwig’s Cathedral, performed by James McVinnie.
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AGGREGATE Festival 2026 is funded by Musikfonds e.V. by means of the Federal Government Commissioner for Culture and the Media
Friendly supported by Sankt Hedwigs-Kathedrale
