Ian Van Dahl

From Discogs:

Created by award winning producers Christophe Chantzis and Erik Vanspauwen, Ian van Dahl bursted into the European consciousness in 2001 with their debut single, 'Castles In The Sky', featuring fellow Belgian singer Marsha. The release of the second single 'Will I?' saw the group fronted by singer Annemie Coenen. Proving to be a great combo they teamed up to give the project a more 'permanent' look. Storming the charts like a raging bull Ian van Dahl quickly became one the most successful dance acts of the last decade. With numerous chart hitting singles, a dozen dance chart #1's, awards and UK best selling dance single and album of the year.Whilst famed for their chart success, the outfit was equally at home in the clubscene, with around 10 to 12 remixes of each single, finding their way into the record boxes of numerous established dj's like Tiësto, Armin van Buuren,...While producing the second album Peter Luts & David Vervoort joined the team to create 'Lost & Found'After the release of the second album Christophe Chantzis & Erik Vanspauwen left the record label, A&S Productions, to start their own production company. Without the support of their main producers the project was decapitated from their original sound.Not long after that Annemie Coenen & Peter Luts also left A&S Productions. They started releasing tracks as AnnaGrace.

From Lastfm:

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.

Read more about Ian Van Dahl on Last.fm.

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From Wikipedia:

Ian Van Dahl began in 2000 as Christophe Chantzis, Erik Vanspauwen and Marsha. Marsha was later released by new vocalist Annemie Coenen. Later on 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.