Focus on The Gypsy Girl (Hals) and discuss the Song.
The Gypsy Girl has not been in any recent international exhibitions and was last lent out for the 1962 Frans Hals exhibition in the Frans Hals Museum, where she inspired the Haarlem singer-songwriter Lennaert Nijgh to write a song about her which he called Malle Babbe, misleadingly named after another painting in the same exhibition. The song celebrates the girl's lusty, vibrant sexuality. The raunchy song became a Dutch hit for Rob de Nijs in 1975 and is still immensely popular in versions by different artists. Today the painting is also sometimes referred to as Malle Babbe for this reason. No name has been discovered in the archives, but various art historians have assumed she was a prostitute.  There is no real reason to assume the model was a gypsy.
Girls painted by Hals who are wearing similar chemises:
Frans Hals Museum gypsy Malle Babbe Rob de Nijs Frans Hals Lennaert Nijgh