Isaak has won the race to represent Germany at this year's Eurovision Song Contest.
The 28-year-old hails from the small town of Espelkamp near Hannover and previously appeared on the local version of The X Factor.
Nine acts competed in the finale, with the final vote determined by a combination of 50% public votes and 50% from the eight international juries: Switzerland, Croatia, Spain, Lithuania, the United Kingdom - represented by Katrina Leskanich of Katrina and the Waves - Iceland, Austria and Sweden.
Isaak and his song 'Always On The Run' - a powerful Rag'n'Bone Man-style pop track - topped both the jury vote, with 74 points, as well as the public vote, with a 'douze points'.
As Germany is one of the so-called 'Big Five' countries, Isaak will not have to navigate a semi-final in order to progress to the grand final, which is due to take place on May 11, in Malmo, Sweden.
Watch Isaak perform 'Always On The Run' below:
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