Danish singer and songwriter Karen Marie Orsted, also known by her stage name Mo, performs during the 2015 Nobel Peace Prize Concert at the Telenor Arena in Oslo, Norway, on December 11, 2015. AFP PHOTO / NTB SCANPIX / JON OLAV NESVOLD +++ NORWAY OUT +++ / AFP / NTB SCANPIX / JON OLAV NESVOLD
US singer-songwriter Steven Tyler (L) nd US singer Nuno Bettencourt perform on stage athe Nobel Peace Prize Concert at the Oslo spectrum on December 11, 2014. The 17-year-old Pakistani girls' education activist Malala Yousafzai known as Malala shares the 2014 peace prize with the Indian campaigner Kailash Satyarthi, 60, who has fought for 35 years to free thousands of children from virtual slave labour. AFP PHOTO / ODD ANDERSEN
Singer Zara Larsson performs on stage during the 20th annual Nobel Peace Prize Concert at the Oslo Spektrum on December 11, 2013 in Oslo, Norway.
▶ EMEL MATHLOUTHI - KELMTI HORRA - The 2015 Nobel Peace Prize Concert - Emel is a firebrand Tunisian singer, songwriter and composer. She gained attention when her song Kelmti Horra (My Word is Free) was adopted by the Arab Spring revolutionaries and soon became an anthem throughout the region, in particular among young people yearning for change.