Colbie Caillat is a pop-rock soloist .
Pop-rock soloists and groups from this era include Kris Allen , Anastacia , Gary Barlow , Daniel Bedingfield , Natasha Bedingfield , James Blunt , Colbie Caillat , Matt Cardle , Kelly Clarkson , David Cook , Daughtry , Gavin DeGraw , Lawson , Demi Lovato ,
Pop rock