After the contest, he released "
Million Eyes", the first single from his debut album
Selfocracy, which later topped the charts in Belgium, reached number eight in France and number twenty in Switzerland. His second studio album
Sillygomania was released on 29 May 2020.
On 3 November 2014, Belgium's French-language broadcaster, Radio Télévision Belge Francophone (RTBF), announced Nottet as the Belgian representative for the Eurovision Song Contest 2015 to be held in Vienna, Austria.[7][9] On 10 March 2015, "Rhythm Inside", his entry for the Eurovision Song Contest 2015, was presented (co-written by his Voice mentor). The song went to number one on both the Flanders and Wallonia Ultratop charts. Performing in the first semi final of the competition, Nottet was successful in progressing to the final, coming second in his semi final with 149 points.
During the Jury Final (following Australia), he could be barely seen on stage due to heavy use of smoke machines and pyrotechnics from the Australian Act. His delegation was rumoured to have lodged a complaint about this, saying that it would affect part of their final score. While they requested to perform again, this was apparently denied, instead telling juries to disregard the smoke. In the Grand Final, the Belgian entry scored a total of 217 points leaving "
Rhythm Inside" in fourth position overall, giving Belgium its first top five placement since 2003. It received the maximum 12 points from three countries; Netherlands, France and Hungary.