Raumbühne (after Schwitters) places the viewer inside a theatrical space that is simultaneously architectural and spectral, its watercolor washes pooling into forms that evoke Kurt Schwitters's Merzbau without ever fully resolving into documentation or homage. Silke Otto-Knapp works in a medium traditionally associated with transparency and immediacy, yet on canvas the watercolor accumulates density and depth, building luminous layers in which grays, whites, and muted tones describe a room that feels both constructed and dissolving. The title's reference to Schwitters is precise and deliberate, invoking the spatial theater of his total-artwork environments while insisting on the distance that separates memory, image, and source. At 180 by 130 centimeters, the canvas commands physical presence unusual for watercolor, and that scale is essential to how the work operates. Otto-Knapp uses the expanded surface to slow the eye, drawing attention to the breath between marks and to the passages where the ground asserts itself through thinly veiled pigment. The result is a painting that feels staged rather than depicted, as though the architectural interior it conjures has been lit for performance rather than habitation. Her sustained engagement with modernist theatrical traditions, from Bauhaus scenography to dance and body, gives the composition an underlying choreographic logic that rewards close looking. For a collector, this work represents a pivotal moment in Otto-Knapp's practice when her formal restraint and her art-historical intelligence converge with particular authority. Signed and presented unframed, it retains the kind of unmediated presence that characterizes her most sought-after canvases. Available through Regen Projects, Raumbühne (after Schwitters) is a work of quiet ambition that holds its complexity in reserve, deepening on each encounter.