For those who still want recommendations b/c they use select websites, I'd recommend:

Nearly any of Chikezie's (I really didn't like him on the show; his studio tracks are nearly amazing and changed my opinion completely)
Michael's are all great, especially "Dream On"
Carly's "The Show Must Go On" and "Without You"
Brooke's "Let It Be" and "Jolene"
Jason's "Fragile"
Syesha's "If I Was Your Woman," "One Rock n Roll Too Many," and "Vanishing" (I actually love them all, but I was a Syesha fan)
David Archuleta's "Smoky Mountain Memories" and "Think of Me"
David Cook's "Little Sparrow," "Always Be My Baby," "I'm Alive," "Innocent" (all that was said above is correct)