The Netherlands' name literally means "Low Country", inspired by its low and flat geography, with only about 50% of its land exceeding one metre above sea level. Most of the areas below sea level are man-made. Since the late 16th century, large areas (polders) have been reclaimed from the sea and from lakes, amounting to nearly 17% of the country's current land mass.The Dutch have a code of etiquette which governs social behaviour and is considered important. Because of the international position of the Netherlands, many books have been written on the subject. Some customs may not be true in all regions and they are never absolute. In addition to those specific to the Dutch, many general points of European etiquette apply to the Dutch as well. Dutch society is egalitarian, individualistic and modern.The Netherlands has multiple music traditions. Traditional Dutch music is a genre known as "Levenslied", meaning Song of life, to an extent comparable to a French Chanson or a German Schlager. These songs typically have a simple melody and rhythm, and a straightforward structure of couplets and refrains. Themes can be light, but are often sentimental and include love, death and loneliness. Traditional musical instruments such as the accordion and the barrel organ are a staple of levenslied music, though in recent years many artists also use synthesizers and guitars. Artists in this genre include Jan Smit, Frans Bauer and the late André Hazes.