Here's what I have:
1. Michael W. Smith 2. Steven Curtis Chapman 3. Tobey Mac 4. Unsure 5. Mark Hall from Casting Crowns? 6. Unsure
7. Nicole C. Mullen 8. Unsure 9. Unsure 10. Wynonna Judd 11. Amy Grant 12. Vince Gill 13. Unsure 14. Natalie Grant
15. Melinda Doolittle Sorry that I can't place all of them... They look familiar but couldn't place it. 
Great song, Michael! Praise God! :) 
Spearheaded by Grammy-winning singer Michael W. Smith, net proceeds from this collection of songs by Christian artists will be donated to support Samaritan’s Purse relief efforts in Haiti, including clean water, shelter, medical care, and other critical aid. It will also support the work of the Billy Graham Evangelistic Association’s Rapid Response Team, whose chaplains are providing emotional and [bad word] to survivors.