2 Pianos,4 Hands,Piano Duet - Level 3 - Digital Download SKU: A0.1033300 By Metallica. By James Hetfield, Kirk Hammett, and Lars Ulrich. Arranged by Fabián Ricardo Jara. Metal,Rock. Score. 8 pages. Fabian Ricardo Jara #6285535. Published by Fabian Ricardo Jara (A0.1033300). The Unforgiven by Metallica for Piano Duet / Four Hands.