Work On Felt (Variation 11), Dark Blue presents a taut carbon fiber string stretched across a large panel of deep blue felt, its industrial precision held in quiet tension against the textile's absorptive warmth. Created in 2016, this work belongs to Naama Tsabar's celebrated ongoing series in which wall-mounted sculptural objects double as functional musical instruments, each one wired with a concealed microphone and connected to a guitar amplifier. The string can be plucked or bowed, sending vibrations through the felt and out into the room, collapsing the boundary between art object and sonic event. What appears at rest as a minimalist wall piece carries within it a latent, participatory charge, one that is activated only through direct physical engagement. Tsabar works at the intersection of sculpture, performance, and feminist inquiry, and this piece reflects her sustained interest in the body's relationship to both architecture and sound. The choice of felt, a material with deep roots in the history of postminimalism, pays quiet homage to artists like Robert Morris and Joseph Beuys while redirecting their legacy through a distinctly contemporary, embodied sensibility. The carbon fiber string, a material more commonly associated with aerospace engineering and high-performance athletics, introduces a note of tensile strength that complicates any reading of the work as merely decorative or passive. Signed by the artist and offered through Museum Dhondt-Dhaenens, this work represents a compelling opportunity to acquire a piece from a series that has been exhibited internationally and that continues to grow in critical and institutional recognition.