With their debut album "Hei" and the hit song "Plystre på deg" they conquered the charts in 2015. The hit parade continued with the song "Elektrisk" ft. Katastrofe
, making them the youngest Norwegian artists ever to go platinum based on streams. The Album "Hei" went platinum in Norway and Sweden, and remained on the official Top 40 chart for 126 weeks, with a record breaking 100 consecutive weeks in the top 20. "Hei" became the third most sold album in Norway in 2015 (after Ed Sheeran
), and they were the second most sold and streamed artist in Norway in 2015 (after Kygo
2016 was a hectic and important year for the boys; They released their first English album, Together
. They sold out the concert hall Oslo Spektrum twice, and won the prestigious award «Årets Spellemann» («Musician(s) of the year») - a prize won by Kygo
the year before.