Easy Piano - Level 1 - Digital Download SKU: A0.1388780 By Christina Aguilera. By Christina Aguilera and Glen Ballard. Arranged by Roger da Luz. 21st Century,Pop,Singer/Songwriter. Score. 2 pages. Roger da Luz #972295. Published by Roger da Luz (A0.1388780). Complete sheet music made easy, in the key of G major.