Julian Schnabel's Tarp series, exemplified by works such as "Untitled #1 (from 'Starting to Sing' Series)", "Sunspot (from 'Mutant King' Series)", and "Birth of Venus (from 'Mutant King' Series)", showcases his innovative use of materials and thematic depth. Created in 1981, these pieces are characterized by the application of oil and sometimes wax on tarpaulin, demonstrating Schnabel's interest in exploring the material properties of his mediums​ (Julian Schnabel)​​ (Julian Schnabel)​​ (Julian Schnabel)​.

"Untitled #1", with its dimensions of 180 x 228 inches, employs oil and rustoleum on tarpaulin, underscoring Schnabel's penchant for large-scale works that challenge the conventional boundaries of painting​ (Julian Schnabel)​. Similarly, "Sunspot" and "Birth of Venus" utilize oil and wax on tarpaulin, with sizes of 108 x 120 inches and 120 x 72 inches respectively, reflecting Schnabel's ongoing exploration of texture, form, and the interplay of various substances​ (Julian Schnabel)​​ (Julian Schnabel)​.

These pieces, especially notable within his broader oeuvre for their textural richness and monumental scale, were exhibited in prestigious venues such as the Tate Gallery in London and the Stedelijk Museum in Amsterdam shortly after their creation, indicating the immediate recognition of their significance within the contemporary art world​ (Julian Schnabel)​​ (Julian Schnabel)​​ (Julian Schnabel)​.

The Tarp series, while diverse in its imagery and themes, collectively exemplifies Schnabel's innovative approach to painting, marked by a departure from traditional canvas to incorporate materials that are often seen as unconventional in the art world. Through these works, Schnabel continues to push the boundaries of neo-expressionism, a movement known for its emphasis on expressive, emotive content, and the revival of painting in the late 20th century.