Singer Valeska Steiner (who is originally from Zurich, Switzerland) and musician Sonja Glass met in 2005 at Hamburg's Hochschule für Musik und Theater (University of Music and Theater) and formed the band in 2007. After playing numerous concerts, the group was noticed by Herbert Grönemeyer, who signed the duo to his Grönland label in 2011. After the release of an acoustic EP titled Hungry Beast, BOY's folk-pop debut album, Mutual Friends, hit the stores in September 2011, entering the German album charts at number 14 and even reaching the top spot of the Amazon sales charts. Their single "Little Numbers," which charted at number 65, was featured in the movie Kein Sex Ist Auch Keine Lösung, in the TV comedy series Knallerfrauen, and in the Lufthansa spot "Nonstop You." In 2012, BOY released Acoustic Session, which featured the duo performing live acoustic versions of songs off Mutual Friends. The following year, they embarked on their first ever tour of the United States, which included a set at Austin's SXSW festival. In 2015, BOY returned with their sophomore full-length album, We Were Here. ~ Christian Genzel