"Friend of a Friend" is a song performed by Czech band Lake Malawi. The song represented the Czech Republic in the 2019 edition of the Eurovision Song Contest in Tel Aviv. The song was announced as the winner of the country's national selection on 28 January 2019. The song was performed during the first semi-final on 14 May 2019, and gained enough votes to qualify for the grand final, where it placed 11th on 18 May 2019.