Ostinatos is a set of four compositions extracted from Interweave, the larger mural that surrounded the construction site of 1969 Oak Bay Avenue as construction hoarding. It was made using selected portions of the large panels, which featured a series of repeating shapes. The original mural was inspired by jazz improvisation and structured in the manner of ostinati, a continuous repeating rhythm, with variations and elaborations. This formal structural device allowed freedom to experiment within the parameters of the specific site, materials, and artistic intention. While acting as the construction hoarding, the mural was also marked by three-dimensional Roman numerals representing the site’s address.