This quilt is built from a single pattern piece, an equilateral triangle, cut from width of fabric strips with a 60 degree ruler. Stack the triangles in vertical rows and sew the rows together, simple as that! No Y-seams, no hand piecing, no multiple mirror image pieces, just chain-pieces straight seams. Material Requirements Include: 1/2 yd Light Purple; 1/2 yd Medium Purple or Gray; 1/4 yd Dark Purple; 1/4 yd Light Yellow; 1/2 yd Medium Yellow; 1/4 yd Dark Yellow; 1/4 yd Light Green; 1/4 yd Medium Green; 1/2 yd Dark Green; 1/4 yd Light Blue or Gray; 1/4 yd Medium Blue; 1/2 yd Dark Blue; 1/4 yd Light Pink; 1/2 yd Medium Pink; 1/4 yd Dark Pink; 1/2 yd Light Aqua; 1/4 yd Medium Aqua; 1/2 yd Dark Aqua; 4 yds Black. 'Calliope' quilt pattern by Ruth Ann Berry of Fabric Therapy and The Quilter's Clinic. Finished size is about 60" x 84".