MADRID.- The Galería Javier López – Mário Sequeira is opening its new gallery with a retrospective of Alex Katz (b. New York, 1927), one of the great names in painting in the second half of the twentieth century. The spacious proportions of the gallery, designed by the architectural partnership Vicens + Ramos, make it possible to appreciate a selection of historic large-scale works by this American creative genius for the first time in Spain in a private gallery. In Once in a Lifetime the artist lays out a journey through the different genres of his work, from monumental group portraits to the distinctive landscapes, by way of figurative representations in a variety of formats. There are also small studies, created with a lighter and more fluid technique than that used in the final canvases, and these sketches from life take us into his laborious creative process. The formal motifs that recur in his compositions&#15