Sharon Janny den Adel is a Dutch singer who is the lead vocalist and one of the main songwriters of the symphonic metal band Within Temptation. She has been a performing musician since the age of 14, and is a founding member of Within Temptation, along with Robert Westerholt, in 1996. She was also elected to be the Dutch chairperson of the jury for the Eurovision Song Contest 2018.

Delain is a Dutch symphonic metal band formed in 2002 by former Within Temptation keyboardist Martijn Westerholt, intending for the band to be solely a project. Singer Charlotte Wessels was invited to join in 2005. The name of the band comes from the Kingdom of Delain in Stephen King's novel, The Eyes of the Dragon. In February 2021, the members decided to part ways. In June 2021, Westerholt announced that there would be a new lineup involving former and new members, with Diana Leah later being announced as the new lead vocalist in August 2022.