Mimas first started playing together in 2004. Quickly developing a unique understanding of one another, the four friends began writing and creating songs together. The following year they released an EP and were invited to play at the legendary Roskilde Festival. The band then started refining their sound before finally releasing their acclaimed debut album The Worries in the UK in October 2008 through Big Scary Monsters Recordings. The album was released in the rest of Europe through Parisian label Distile Records.