[1] The duo met at a six-week music course, but then Steiner returned to Switzerland and the two kept in touch rather irregularly.

[2] The band initially played concerts exclusively,[3] before being discovered by and signed to Herbert Grönemeyer's label, Grönland Records, in 2011.

[4] Their debut album, Mutual Friends was produced by Philipp Steinke and released in the autumn of 2011.

[7][8] The duo's song "Little Numbers" was also featured in the Lufthansa Airline's Business Class advertisement in mid-2012.

[9] The duo's first-ever US tour launched on March 1, 2013, with a sold-out performance at Joe's Pub, New York City.