David Martijn Westerholt (born 30 March 1979 in Waddinxveen, Netherlands) is the cofounder (along with Charlotte Wessels), keyboardist, and the main songwriter of the Dutch symphonic metal band Delain.
 He was previously a member of symphonic metal band Within Temptation, until he was diagnosed with infectious mononucleosis shortly after the release of Within Temptation's second full-length studio album, "Mother Earth".
 His brother Robert Westerholt is the guitarist and founder of Within Temptation.
 He currently lives in Zwolle, where he resides since his study in Communication at Windesheim College in 1998.
"Memories" is a ballad-song by Dutch symphonic metal/rock band Within Temptation from their third studio album, "The Silent Force".
 It was released as the second single from the album on 31 January 2005 also accompanying a music video.
 The song was covered by American classical crossover singer Jackie Evancho for her third studio album, Awakening.
The Silent Force is the third studio album by Dutch symphonic metal band Within Temptation, released on 15 November 2004, by GUN Records.
 This album is the first to feature Ruud Jolie on lead guitar, as well as Martijn Spierenburg on keyboards, after Martijn Westerholt had to leave the band due to illness.
"Jillian (I'd Give My Heart)" is a song written by Sharon den Adel, Robert Westerholt and Martijn Spierenburg for the album "The Silent Force" (2004).
 It was used to promote Within Temptation's live DVD "The Silent Force Tour" (2005).
The Silent Force Tour was a concert tour by Dutch symphonic metal band Within Temptation in support of their third album, The Silent Force.
"Stand My Ground" is the first single from Dutch symphonic metal/rock band Within Temptation's "The Silent Force".
 The song is also included on the U.S. edition of the band's 2007 album "The Heart of Everything".
 It became a top 10 hit in three countries (the Netherlands, Belgium and Finland) and became a top 40 hit in four other countries.
 It was also used in the trailer for the film "Blood & Chocolate".
"Angels" is a song by Dutch symphonic metal band Within Temptation from their third studio album, "The Silent Force".
 It was released as the third single from the album on 13 June 2005, also accompanying a music video.
 The video earned the band a Golden God Award on the following year.
Sharon Janny den Adel (born 12 July 1974) is a Dutch singer, songwriter and fashion designer, best known as the lead vocalist and one of the main songwriters in the Dutch symphonic metal band Within Temptation.
 She has been a performing musician since the age of 14, and was a founding member of Within Temptation, along with Robert Westerholt, in 1996.
The Silent Force Tour is a double DVD which was released by the symphonic metal/rock band Within Temptation on November 18, 2005.
 In addition to the standard double DVD release, the deluxe edition includes a bonus CD.
"In and Out of Love" is a collaboration between Dutch DJ and record producer Armin van Buuren and Dutch singer Sharon den Adel (Within Temptation).
 It was released on 6 August 2008 as the third single from van Buuren's third studio album, "Imagine".

Question: What song did the Dutch singer that was a founding member of Within Temptation help write for the album "The Silent Force"?
Answer: "Jillian (I'd Give My Heart)"