The painting "Duet – 014" (also known as "Two Acts – 014") from 2014 is a classic example of Eugeniusz Gerlach's mature work, in which the artist combines figurativeness with an almost abstract geometric structure. As with Gerlach's other works, the composition is based on a distinct black outline that divides the surface into smaller fields of color, reminiscent of the structure of a stained-glass window. The artist uses line to build a logical structure, where the human figures (the duo) are the starting point for formal exploration. Although the shapes are highly geometric, anatomical details, such as facial outlines (eyes) and breasts, remain legible. The painting strongly reflects the influence of Cubism (the division of solids into planes) and the pre-war Polish school of color. The work is characterized by a rich color palette. In contrast to the monochromatic dominance of some other works (such as "Drummer Boy"), here there is a stark contrast between warm yellows, oranges, and pinks and cool blues and greens. The arrangement of lines suggests dynamism and the interrelationship between the figures. The title "Duet" may refer to both interpersonal and musical relationships, a recurring theme in Gerlach's work. The painting is part of a series devoted to dance, music, and female nudes. The artist often assigns numerical designations to his works (e.g., "- 014"), which may suggest a specific thematic variant from a given year. Gerlach does not strive for realism; the figures are imagined, unreal, and serve as a vehicle for emotion and pure pictorial form.