The music of Franco-German composer Mark Andre (b. 1964) often engages with biblical theology. Rather than creating superficial programmatic connections between biblical narratives and musical expression, Andre arguably delves into the intricacies of biblical narratives, extracting morphological features that feed into the structure of his compositions. In this paper, I will explore and illustrate Andre’s approach through an analysis of iv 15: Himmelfahrt (2018), a work for the organ. Particular attention is paid to the so-called Ausklang passages, in which the wind supply to the organ is deliberately cut off, allowing for a gradual fading away (disappearance) of sound. I show how these sonic traces actively engage with the theological dialectic of presence and absence inherent in the Ascension narrative. With these analytical insights, I develop a synthetic reflection on the intricate connection between music and theology in Andre’s work, invoking the concepts of mimesis and sacramentality.