What is in this image? Be very specific. Scientific, Engineering style! No emotions, no opinions, no metaphors. Just the facts, as detailed as possible.

The image depicts a group of four stylized anthropomorphic mice engaged in a musical activity. Each mouse stands upright on two legs and holds an open book, appearing to sing from it as illustrated by musical notes above their heads.Starting from the left1. The first mouse features a winter cap with a pom-pom at the end. It has a rounded body, its eyes are closed, and its mouth appears slightly open, enhancing the singing gesture. Its tail is thin with a slight curve.2. The second mouse, identical in shape and postural characteristics to the first, also has a similar winter cap and a pom-pom. It mirrors the pose and expression of the first.3. The third mouse, slightly larger, is positioned with its head tilted upwards and to the right, mouth wide open in song. This individual is distinguished by a different headgear a minimalistic round hat reminiscent of a beret or similar. 4. The fourth mouse on the far right is the tallest, featuring a simple rounded head with a dot in the center representing either a facial feature or decorative element on its hat. It holds the book similarly and has a slightly open mouth geared towards singing.Their books are simple in design, showing an unlined cover, likely indicating their use as hymnals or song books. Each mouse has a small, round nose, and simple ears protruding laterally from the head. The stylization is flat and monochromatic, using clean black outlines against a white background, focusing on conveying the activity without any background distractions.