Cubism went through three phases. The first was Analytic cubism. This is shown in Pablo Picasso and George Braque’s work, Ma Jolie and The Portuguese. Both are very similar as these two artists worked together closely. Both works showcase reduction. The colors are simplified only showing a small range. Also, there is no depth within the work. Lastly the things and people depicted in the works are broken down into geometric shapes.
The next phase was Synthetic Cubism. Guitar, Sheet Music and Glass was representative of this phase. Each of the three objects for which this work was named are shown through a collage with some representing the item literally like the sheet music while some are of an abstract form which represent the object.