Husband and wife duo Watermark came to and end in 2006 -- not the marriage, just the music. They gave the industry four fine contemporary Christian albums and a farewell collection all blessed by Nathan Nockels' piano and guitar (and occasional vocals) and Christy Nockels' sweet, sweet singing. Their most widely recognizable contribution is the pop hit "More Than You'll Ever Know" from the album All Things New. Their influence lingers as Nathan partners with other artists' projects, and Christy makes guest appearances, most notably on Passion Worship's offerings, since she has had a long history with the band. But their primary focus post-2006 is as parents to their daughter, the inspiration behind "Elliana's Song," featured on their final album, A Grateful People.