Lily’s work is largely concerned with the intersection between mathematics, art and music. She explores this through self-imposed and self-created rule systems influenced by mathematical theory, music theory, system art and instinct. These rule systems dictate the outcomes of her paintings, which investigate the nature of the painted line. Her large-scale work pushes the physical limits of her body but also investigates its relationships with its space and materials, and the passing of time. Notions such as tactility, fragility and detail are all essential in her practice, which balances the certainty of mathematics against softer, more intuitive expression.