Christopher Uckermann

Christy Carlson Romano
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Ciara Harris

Clay Aiken

Clay Goodell

Cody Simpson

Colbie Caillat

Cole Pendery

Colorsound

Connie Talbot

Connor Sharpe

Conor Maynard

Corbyn Besson
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Cormac Thompson

Damian McGinty

Daniel Gogolla

Daniel Seavey

Daniel Skye

Danny Jones

Danny Zavatsky

Dante Palminteri

Darci Lynne Farmer

Darin Zanyar

Dario Flick

Darren Criss

Dave Williams

Daveigh Chase

David Archuleta
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David Cook

David Levi

David Parejo

De Breaks

Deacon Phillippe

Dean Geyer

Declan Galbraith

Demi Lovato