Müller conducts his first artistic studies in Florence, completes his training in Paris in the two-year period 1888-1890, Claude Monet in particular, is decisive for his pictorial orientation. In fact, Sun of April of certain date - that 2 April 1890 written by the author on the front together with the signature - was executed immediately after Müller's return, in March of that year, from his first stay in Paris. Symbolic subject of modern life, as a renowned destination for a newborn cultured and wealthy maritime tourism, the Pancaldi bathing establishment, built in 1846 on the Livorno seafront, is depicted in disarmament, deserted, enveloped in the soft glow of a still distant spring like the touches blue suckers in the sky foreshadow. The non-canonical structure of the painting is characterized by the large void of the expanse of water that widens from the first floor to occupy the median one, letting the gaze slowly slide towards the bare platform flooded by the orange light that bounces up to the high horizon. Brushstrokes like commas, quick and instinctive, alternate and overlap the impasto areas to suggest the shimmer of the sea and the movement of the waves, poised between Monet's audacious radiance and Renoir's evanescent chromaticism.