Danish Music Award Nominated sound artist Calum Builder's "Renewal Manifestation" is a tour de force that somehow reinvents the traditional organ composition, infusing it with a sense of mystic resurrection and sonic exploration. This album, featuring organ, alto saxophone, and the CRUSH string trio, has been described as an instrumental necromancy, where the organ is brought back to life in a manner reminiscent of Norse mythology's draugr or the Celtic barrow-wight. According to the critic Tim Rutherford-Johnson: “In Renewal Manifestation, Calum Builder, an Australian saxophonist and composer residing in Copenhagen, embarks on a kind of instrumental necromancy, approaching the organ like an undead spirit – a ‘creature being taught how to breath and sigh’, as he puts it. A revenant. Like the draugr of Norse mythology or the Icelandic aptrganga (‘again-walker’), or the Celtic barrow-wight, Builder’s organ is reanimated, brought back from the dead – even if not fully back to life. Renewal Manifestation concerns stories of mystic visions and experiences that are poured out upon those who have sought communication with divine spirits...we can feel ourselves embraced at the threshold of that world, and being seduced into it.”

Builder approaches the organ not just as an instrument, but as a living entity capable of breathing and sighing. The result is an ethereal wave of sound that seems to transcend the physical boundaries of traditional music, washing over listeners with an almost spiritual intensity. The interplay between the organ and the strings creates a dynamic and immersive listening experience that is both haunting and beautiful. Many listeners have praised Builder’s innovative approach, noting how the album can draw them into a world of mystic visions and divine encounters. The use of the CRUSH string trio adds depth and texture, creating a rich tapestry of sound that envelops the listener completely.

The album's technical brilliance lies in its ability to blend classical instrumentation with a contemporary sensibility, making it accessible yet profound. The compositions are meticulously crafted, showcasing Builder’s mastery over both the saxophone and the intricacies of organ music and potentially resonating with both the intellect and the soul (if the listener features one of them at least!) through a kind of transformative experience that sounds as enlightening as it is moving.