Gilbert was invited to join CoBrA by Asger John after he saw Gilbert?s work at the `Salon des Surindependents? in Paris in 1948. Gilbert was associated with this avant-garde group until 1951 when he began to develop a more abstract aesthetic. This work was described by Gilbert as ?one of my first abstract paintings?. Although minimal and reductive, `Abstract Forms? is extremely bold and powerful, with thick paint applied confidently in large brushstrokes.