The Swedish participating broadcaster, Sveriges Television (SVT), organised the national final Melodifestivalen 2015 in order to select its entry for the contest.

After a six-week-long competition consisting of four heats, a Second Chance round and a final, "Heroes" performed by Måns Zelmerlöw emerged as the winner of the Melodifestivalen 2015 after achieving the highest score following the combination of votes from eleven international jury groups and a public vote.

Performing during the show in position 13, "Heroes" was announced among the top 10 entries of the second semi-final and therefore qualified to compete in the final on 23 May.

In the final, Sweden performed in position 10 and placed first out of the 27 participating countries, winning the contest with 365 points.

Following the introduction of semi-finals for the 2004, the Swedish entries, to this point, have featured in every final except for 2010 when the nation failed to qualify.

The nations that comprised the international jury were Armenia, Austria, Belgium, Cyprus, Estonia, France, Israel, Malta, the Netherlands, Slovenia and the United Kingdom.

[10] According to Eurovision rules, all nations with the exceptions of the host country and the "Big Five" (France, Germany, Italy, Spain and the United Kingdom) are required to qualify from one of two semi-finals in order to compete for the final; the top ten countries from each semi-final progress to the final.

[11] On 26 January 2015, a special allocation draw was held which placed each country into one of the two semi-finals, as well as which half of the show they would perform in.

During the verses, the performance focused on him singing in front of the board, interacting with choreographed graphics such as stick-man figures.

He was joined by five offstage backing vocalists: Britta Bergström, Michael Blomqvist, Linnea Deb, Alexander Holmgren and Jeanette Olsson.

[20] At the end of the show, the Sweden was announced as having finished in the top ten and subsequently qualifying for the grand final.

The jury consisted of five music industry professionals who were citizens of the country they represent, with their names published before the contest to ensure transparency.

This jury was asked to judge each contestant based on: vocal capacity; the stage performance; the song's composition and originality; and the overall impression by the act.

[31] Following the release of the full split voting by the EBU after the conclusion of the competition, it was revealed that the public televote and jury results were in disagreement in regards to the winner in the final.