Stefan Goldmann’s "Expanse" on Edition Kymata is a paragon of avant-garde dedication, a five-CD odyssey that challenges, seduces, and perhaps dares the listener to transcend the mundane. A project drenched in reverb and conceptual audacity, "Expanse" seems designed for an audience that revels in the abstract and the esoteric, where music meets an immersive, intellectual abstraction.

Goldmann’s "Expanse" stands as a stark contrast to the ephemeral, often forgettable output in electronic music. Instead of transient beats or catchy hooks, this work offers something more akin to a spiritual, cerebral journey. Each "Sector" is a sprawling, hour-long exploration of reverb as a primary musical element, a decision that borders on both audacious and paradoxically mundane. The five long-form tracks are essentially five profound exercises in auditory architecture, echoing their conceptual forebearers but with a distinct modern flourish.

The liner notes hint at an ambition to recreate "impossible architecture", and Goldmann succeeds in creating auditory spaces that are both infinite and intimately enclosed. These pieces are not for casual listening; they require an environment where the listener can immerse fully. Here lies the irony—while the music itself strives to create a boundless, almost architectural vastness, the listener’s experience is tethered to the very corporeal limitations it aims to escape. The immersion demands not just attention, but a sort of cognitive space that many might find excessively demanding.

The aesthetic of "Expanse" is not immediately accessible or even welcoming. Goldmann's choice to focus solely on reverb creates a paradoxical sensation of both presence and absence. The enveloping soundscapes are soothing in their monotony yet menacing in their omnipresence. The experience is akin to wandering through an architectural masterpiece with no clear exit—a beautiful, disorienting labyrinth of sound.

In "Sector 1", the gentle reverberations may initially seem to offer solace, but as the hours pass, they become an ever-present fog that can obscure rather than clarify. Similarly, "Sector 2" through "Sector 5" each present their own subtle twists on this theme, evolving from the soothing to the unsettling. The progression from one sector to the next is less about change and more about the nuanced exploration of the same thematic territory.

On an analytical level, "Expanse" is a profound study in the mechanics of reverb. Each sector is meticulously designed to exploit the acoustic properties of an imagined space. This approach allows Goldmann to dissect and present the granular aspects of auditory perception and the ways in which space can be perceived through sound alone. The statistical data alluded to in the liner notes suggests a rigor and precision that would appeal to both audiophiles and those fascinated by the intersection of mathematics and music.

However, this intense focus on reverb can become somewhat monotonous. While the concept is intriguing, the execution sometimes feels like a high-brow exercise in sonic minimalism. For those not entirely enamored with the dissection of reverb’s theoretical properties, the experience might come off as a monotonous drone rather than an inspiring journey.