Urban Symphony uses a stark shades of gray palette to explore the intersection of nature and human-constructed environments. Fonseca employs silhouette art to strip subjects down to their most recognizable forms, allowing the viewer to focus on the graphic shape composition. The interplay of light and shadow creates a luminous effect, suggesting a city that breathes through its music and its wildlife.

The inclusion of bird species diversity alongside musical instruments suggests a punk-inspired subversion of the traditional cityscape. By focusing on simplicity in form, the artist highlights the shared energy between a performer's stance and the flight of a bird. It is a naturalistic depiction of urban life that feels both gritty and melodic, grounded in the textures of the street.