Mikolas Josef is a singer and former model. After leaving the latter industry, he pursued a singing career by busking in several European cities such as Oslo, Zürich, Hamburg, and Vienna. He has released several singles independently, one which became a Top 20 hit in his home country.
In January 2018, he was selected to represent his home country at the Eurovision Song Contest 2018 in Lisbon with the song "Lie to Me". In spite of injuring himself in rehearsals, he performed in the first semi final and qualified for the final where it finished in 6th place with 281 points, making it the country's most successful entry since they began participating.