That is a painting of Judith and her Maidservant. 1615 painting by the Italian baroque artist Artemisia Gentileschi. It hangs in the Pitti Palace, Florence.
The deliberate evocation of primitive power through insistent rhythms and percussive sounds is known as Primitivism.
Primitivism has its adherents favored simple, clear cut tunes of folk characters that revolved around a central note and moved within a narrow compass.
