Ian van Dahl is the former name of the Belgian vocal trance music group, AnnaGrace. They have seen success on dance charts around the world. Among their hit songs are "Castles in the Sky," "Will I?," and "Inspiration." Their third album, and debut under the AnnaGrace alias was released via iTunes on June 16th and in stores on June 21st, 2010.

Ian Van Dahl began in 2000 as Christophe Chantzis, Erik Vanspauwen and Martine Theeuwen, who was referred to as Marsha. Marsha was soon replaced by vocalist Annemie Coenen. Later, Peter Luts and David Vervoort (more famously known as Dave McCullen) joined the group. In 2008, the group changed its name to AnnaGrace retaining only Annemie Coenen and Peter Luts as members.

Annemie Coenen was co-writer and co-producer of all the songs on the second Ian van Dahl album, "Lost and Found," and wrote many of the lyrics for the first album, "Ace." She has also written music for the group Lasgo (including #1 Hit ‘Surrender’). Peter Luts was behind some of the remixes on the first album by Ian Van Dahl, and then he was brought in to co-produce the full second album. Peter has also produced other bands such as Lasgo and Dee Dee, and is well known among DJs and clubgoers for his remixes.