Marcus & Martinus (also known as M&M) are Norwegian identical twin brothers Marcus and Martinus Gunnarsen. They debuted in 2012 after winning that year's edition of Junior Melodi Grand Prix and have since released 3 studio albums and one EP. They were the Norwegian spokespeople at the 2017 contest in Kyiv.
In 2022, they won the second season of the Swedish version of The Masked Singer as "Spelmannen" (Fiddler).
The following year, they entered Melodifestivalen 2023 with the song "Air", finishing in 2nd place to Loreen, with the song later winning the 2023 OGAE Second Chance Contest.
They won Melodifestivalen on their second attempt, becoming the second foreign act to do so (following Ashley Haynes of The Mamas) and represented Sweden at the Eurovision Song Contest 2024 in Malmo with the song Unforgettable, finishing in 9th place in the final..
