An article by Helen Louise Allen on designing variations in Summer and Winter weave, using the idea of "swing" music as a metaphor for personal improvisation on a given draft. It gives a checkerboard-block draft for ten- or eight-heddle looms, explains how to combine blocks and nine ways of treating each block (checks, lines, grills, solid), and discusses unit schemes, tie-ups for jack and lever looms, and color. Treadling directions are given for eight designs (I-VIII), with threading and tie-up diagrams and drawdowns.