Martijn Spierenburg is a composer and arranger. He is also keyboard player for the Dutch symphonic rock band Within Temptation.
Spierenburg has written and arranged music for several artists, TV series and games. He joined Within Temptation in 2001, shortly after the release of Within Temptation's second full-length studio album, Mother Earth.
Spierenburg co-wrote songs for various Within Temptation albums, including Angels, Memories, Jillian, Our Solemn Hour, The Cross, Sin