String Orchestra - Level 3 - Digital Download SKU: A0.1166910 By BTS. By Alexander Joshua Bilowitz, Jenna Andrews, Namjun Kim, Robert Grimaldi, Ron Perry, Sebastian Garcia, and Stephen Kirk. Arranged by Margie Dally. Hip-Hop,Pop,R & B,Rock. Score and parts. 15 pages. Margie Dally #767289. Published by Margie Dally (A0.1166910). Butter is a catchy, upbeat song released in 2021 by South Korean boy group BTS.This arrangement includes an optional Violin 3 (viola) part.