Listen to Within Temptation online radio. Within Temptation is a Dutch symphonic metal/rock band founded in 1996 by vocalist Sharon den Adel and guitarist Robert Westerholt. Their as symphonic metal, although their earlier material, such as Enter, wasgothic metal. In an interview, den Adel said they fell into a symphonic rock genre with various influences. In a later interview with 3VOOR12, den Adel stated that "we consider ourselves more a symphonic rock band ... we are in my opinion no gothic band"