The guy who sings that 'once I was 7 years old' song has a crazy life story

Christiania is a community in the center of Copenhagen. Musician Lukas Forchhammer grew up there in the '90s, at a time when there were no cars or streetlights and a toilet and running water were considered luxuries. Still, Lukas says Christiania had a "utopian vibe" and it helped shape the young man he is today. Lukas now fronts his band Lukas Graham; a band with a string of international hits.