Sierra was co-written by the duo signed to what label?
Sierra (song) "Sierra" is a song co-written and recorded by American country music duo Maddie & Tae. It was released to radio on May 16, 2016 as the fourth single off of their debut studio album, "Start Here". The song was written by the duo (Taylor Dye/Madison Marlow) and Aaron Scherz.
Boy (duo) Boy (stylized BOY) is a Swiss–German pop duo founded in 2007 by Swiss singer Valeska Steiner and German bassist Sonja Glass. The two met while at a pop-music course at the Hochschule für Musik und Theater Hamburg in 2005. The band initially played concerts exclusively, before being discovered and signed to Herbert Grönemeyer's label, Grönland Records, in 2011.