Piano Solo - Level 4 - Digital Download SKU: A0.1213408 By Justin Bieber. By Christopher Stewart, Corron Ty Kee Cole, James Bunton, and Thabiso Nkhereanye. Arranged by Eskander Aceval. Pop. Score. 4 pages. Eskander Aceval #810593. Published by Eskander Aceval (A0.1213408). Justin Bieber - One Time chords, piano. Original key & tempo.