How does this artwork elucidate its Background?
Rosa Maria Malet says of these works: The painting has the distinctive features of recent works by Miró, where there is abundant use of black and a considerable reduction of other colors in proportion to the black. This together with the apparent indifference in the application of paint on the canvas. With the appearance of dripping and splashing, this work gives great strength and aggressiveness. Aggressive, but there is more in form than content. These works should not be interpreted as a cry of protest, but as a sincere and spontaneous manifestation of feelings of the artist. 
As for the technical execution Miró explains himself (as Taillandier reported in 1974)  This method is to dip your finger in the paint is fairly recent. In a photo of my monograph can be seen as I do it. I always use the resource of the fingers. Even spread paint fist, and, rubbing in circles.