In Marguerite Gachet at the Piano, Vincent van Gogh presents a young woman seated at a piano, her fingers poised over the keys. The colors are vibrant, with rich blues and yellows dominating the scene. Marguerite's expression is calm and focused, suggesting her deep engagement with the music.

The background is softly rendered, allowing her figure to stand out prominently. The painting is executed in oil on canvas, a medium that van Gogh mastered throughout his career. It measures approximately 60.5 x 49 cm, making it a relatively intimate work. The brushwork is characteristic of van Gogh's style, with visible strokes that add texture and movement to the composition.

The use of color and light creates a warm atmosphere, inviting viewers into the scene. Vincent van Gogh painted this work in June 1890, shortly before his death. Marguerite Gachet was the daughter of Paul Gachet, a physician and friend of van Gogh. This painting is notable for its personal connection, as it reflects the artist's admiration for Marguerite's musical talent.

It is currently housed in the Van Gogh Museum in Amsterdam, where it continues to captivate audiences.