Alexander Calder's *Composition with Blue Sphere* merges his iconic exploration of line and form through the inventive combination of oil on canvas with three-dimensional wire elements integrated into the artist's own handcrafted frame. The luminous blue sphere anchors the composition, radiating a playful yet precise tension against the dynamic interplay of painted and sculptural elements. True to Calder's distinctive vision, the work dissolves the boundaries between painting and sculpture, inviting the viewer's eye to move fluidly between two and three dimensions.