1 Piano,4 Hands,Piano Duet - Digital Download SKU: A0.503271 By Justin Bieber Duet With Mariah Carey, Lady Antebellum, Mariah Carey, and Michael Buble. By Mariah Carey and Walter Afanasieff. Arranged by Catia Lee. Children,Christmas,Holiday,Pop,Traditional. Score. 9 pages. Published by Catia Lee (A0.503271). All I want for Christmas is you for piano solo. 4 hands piano with simple melody, accompaniment with bass and chord and fingering.