I Need Cello Music wuth the Melody?

Hey, I am a cello player, and I want music by my favorite artists (Miley Cyrus, Selena Gomez) but i want CELLO MELODY! Umm, and it has to be free and printable. Umm, so yea.... also, remember, CELLO MELODY OF THE SONG! Most wanted songs are 'erfly Fly Away', 'I Though I Lost You', 'The Climb', ect... Thanks!!