Emel Mathlouthi released her debut, Kelmti Horra, in January 2012. The album was influenced by Joan Baez, Massive Attack, and Björk. As a politically aware musician, the songs in the album have made promising duty to speak out on any injustice that Emel has witnessed about her beloved Tunisia. While she sings about humanity and a better world, the success of this album has made her to reach many more people in different parts of the world. As the song, "Kelmti Horra" (My Word is Free), was considered as "the anthem of the Arab Spring," it has been Emel's most famous song so far. The outstanding success of this songs led her to perform the song on December 11, 2015, during the award ceremony of the 2015 Nobel Peace Prize in Oslo, which was awarded to the Tunisian National Dialogue Quartet.