Antiphonia is an imaginary, unwritten choir piece, inspired by an idea of polychoral singing. Only this time, it is a choir of overlapping saxophones, and the melody simultaneously starts at 60 bpm and 63 bpm. The layers of saxophones weave and tumble through each other, creating a sea of sound, wooshing over the cumulatively overlapping material, sinking into the sound itself, and weaving continuously shifting harmonies.

Composition, tenor and soprano saxophones, mixing: Heli Hartikainen
mastering: Alexander Stuster
concept, cover: Miro-Benjamin Lindström
Untempo Postcards #4

Released by Untempo Postcards 2025

Antiphonia

In their solo concert in Hiljaisuus Festival 2025, Hartikainen presents new music built around a specially customized sampler software. This active and polyphonic live sampler, controlled by Hartikainen’s tenor saxophone, responds in real time to various performance parameters, such as pitch and volume. A degree of randomness is integral to the sampler’s design, allowing Hartikainen’s improvisation and algorithmic aleatoricism – the human and the machine-organism – to merge organically.

Live at Hiljaisuus Festival 6.6.2025

In these live recordings from Roihuvuoren Rio in Helsinki, Finland, September 2025, Hartikainen presents new music built around a specially customized sampler software. This active and polyphonic live sampler, controlled by Hartikainen’s tenor saxophone, responds in real time to various performance parameters, such as pitch and volume. A degree of randomness is integral to the sampler’s design, allowing Hartikainen’s improvisation and algorithmic aleatoricism – the human and the machine-organism – to merge organically.

Aporia

Untempo Postcards #5: AHO – Exercises I
Exercise 1 (BASS)
Exercise 1 (for Piano and Tape)

Out now!

Exercises I contains two distinct interpretations of a slowly repeating, soft melody, which unfolds into two independent pieces.

Originally concepted for a friend’s zodiac-themed art exhibition - exercises composed to soothe a Gemini mind.

Recorded and mixed in Helsinki 2025 by Matti Ahopelto Mastered by Taylor Deupree Cover & concept: Miro-Benjamin Lindström

#untempo

Exercise 1 (for Piano and Tape)

Exercise 1 (BASS)

Heli Hartikainen (Finland) is an award-winning saxophonist, composer, and sound artist whose music merges experimental sonic textures with hypnotic, evolving soundscapes. As a saxophonist, Hartikainen is a passionate instrumentalist who, in each performance, continually pushes the limits of their instrument, themself, and the possibilities of sound technology ever further.

"Interbody" examines time from the perspective of the human body: geological, atmospheric, corporeal, and technological time as embodied experience. At its core is the tenor saxophone, extended through a custom-built live sampler that responds in real time to pitch and volume, creating a polyphonic counterpart to the performer. A degree of randomness is built into the system, merging improvisation and algorithmic processes—the human and the machine-organism—and keeping the performer on their toes.

00:25 Interbody
08:14 Tide
17:08 Pneuma
22:50 Aporia
27:00 Mosaic
31:50 Nadir


Tenor saxophone, compositions, samples: Heli Hartikainen
Live sound: Kimmo Antikainen / G Livelab Helsinki 31.10.2025

#tenorsaxophone #liveelectronics #electroacoustic #electroacousticmusic #soundart #ambientjazz #experimentalmusic #maxmsp #experimentaljazz #freeimprovisation #saxophonist #finnishmusic

Heli Hartikainen - Interbody / Live at G Livelab Helsinki

Award-winning avantgarde saxophonist, composer and sound artist from Helsinki, Finland

Aporia

Heli Hartikainen

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