In an act called Swedish Pop Voices the two singers are going to do a medley of their biggest hits.
Both Darin and Agnes shot to fame in the Swedish edition of Idol, when Agnes won her year and Darin was the runner-up in his year.
They have both also tried their luck in the Swedish national final for the Eurovision Song Contest, Melodifestivalen.
Agnes has been enjoying some international success with her Release me high in the charts around the world.
With these two acts the Swedish organisers say they are proud to present for Europe two of the best pop voices Sweden has to offer at the moment.
Darin in Melodifestivalen 2010:
Agnes in Melodifestivalen 2009: