THEY smashed onto the rock and indie scene in the early 2000s before taking to the Eurovision stage nearly two decades later.
But despite being in the limelight for over 30 years, the band constantly baffles fans with their youthful looks.
The Rasmus are one of Finland's most internationally successful groups, although many may only be able to list one of their tracks.
Their biggest hit, In the Shadows passed propelled them to fame in 2003, allowing them to reach international audiences.
The grungy track hit the 100 million streaming mark on Spotify - despite being released years before the platform was invented.
But the new-found attention was nothing new as they were already stars in their native Finland thanks to their first four albums.
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In 2022 The Rasmus performed their track Jezebel for their country in the Eurovision Song Contest.
They finished 21st place in the final, but won themselves more fans along the way.
In 2022 the band said goodbye to their founding guitarist Pauli Rantasalmi and introduced Emilia 'Emppu' Suhonen.
Emppu launched her career in the late nineties with her girl band Tiktak.
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She joined frontman Lauri Ylönen, Eero Heinonen and Aki Hakala as the only female in the group.
Eurovision Song Contest entries 2024
Here are all of the acts who took part in the Eurovision Song Contest.
Finalists:
- United Kingdom: Olly Alexander - Dizzy
- Sweden: Marcus & Martinus - Unforgettable (2023 winning country)
- France: Slimane - Mon amour
- Germany: ISAAK - Always On The Run
- Italy: Angelina Mango - La Noia
- Spain: Nebulossa - ZORRA
- Serbia: TEYA DORA - RAMONDA
- Portugal: iolanda - Grito
- Slovenia: Raiven - Veronika
- Lithuania: Silvester Belt - Luktelk
- Ireland: Bambie Thug - Doomsday Blue
- Ukraine: alyona alyona & Jerry Heil - Teresa & Maria
- Luxembourg: TALI - Fighter
- Finland: Windows95man - No Rules!
- Croatia: Baby Lasagna - Rim Tim Tagi Dim
- Cyprus: Silia Kapsis - Liar
- Armenia: LADANIVA - Jako
- Austria: Kaleen - We Will Rave
- Estonia: 5MIINUST x Puuluup - (nendest) narkootikumidest ei tea me (küll) midagi
- Georgia: Nutsa Buzaladze - Firefighter
- Greece: Marina Satti - ZARI
- Israel: Eden Golan - Hurricane
- Latvia: Dons - Hollow
- Norway: Gåte - Ulveham
- Switzerland: Nemo - The Code
Out:
- Poland: LUNA - The Tower
- Iceland: Hera Björk - Scared of Heights
- Moldova: Natalia Barbu - In The Middle
- Azerbaijan: FAHREE feat. Ilkin Dovlatov - Özünlə Apar
- Australia: Electric Fields - One Milkali (One Blood)
- Malta: Sarah Bonnici - Loop
- Albania : BESA - TITAN
- Czechia: Aiko - Pedestal
- Denmark: SABA - SAND
- San Marino: MEGARA - 11:11
- Belgium: Mustii - Before The Party's Over
Disqualified:
Netherlands: Joost Klein - Europapa
The Rasmus stars are frequently met with questions on how they have stayed looking so young over the decades.
In recent posts they have been jokingly accused of being 'vampires' due to their ageless appearance.
"Emppu looks like a Vampire ! I swear you all don‘t age at all," one wrote.
"I swear Lauri never ages," another said in the comment section.
"Aki ages like fine wine," swooned a third.
In an interview last year with Metal Hammer, Lauri said: "In the beginning it was so crazy because we got famous so fast.
"We lived all our life in this kind of bubble. I'm still in that bubble."
The band formed when they were at school after finding a passion for eighties/nineties bands like Nirvana.
“We started very young; I was in eighth grade when we put the band together.
Since I was 15, we’d been very different from the normal guys – 95% of the guys were into soccer, and then there was us, who listened to Red Hot Chili Peppers and Nirvana.”
Finland's entry this year is Windows95man, who has bagged himself a spot in the Grand Final of the song contest.
He performs nineties dance classics and techno anthems as part of his DJ set.
As well as creating music, he's also famous in Finland for his paintings and prints and has his own art gallery in Helsinki called Kalleria.
He will be going against the UK's Olly Alexander with his track Dizzy.
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The 33-year-old hitmaker suffered a technical blunder in his most recent performance.
Years & Years star Olly said he was 'stressed' and 'emotional' after he nearly lost his mic pack during the live performance.