Please answer the following question: Information: - Survival horror is a subgenre of video games inspired by horror fiction that focuses on survival of the character as the game tries to frighten players with either horror graphics or scary ambience. Although combat can be part of the gameplay, the player is made to feel less in control than in typical action games through limited ammunition, health, speed and vision, or through various obstructions of the player's interaction with the game mechanics. The player is also challenged to find items that unlock the path to new areas and solve puzzles to proceed in the game. Games make use of strong horror themes, like dark maze-like environments and unexpected attacks from enemies. - Penumbra : Overture is the first in a series of episodic survival horror games developed by Frictional Games . It was originally intended as the first episode of a trilogy . With the announcement of the second episode , Penumbra : Black Plague , it was stated that the second game would be the final chapter . However , an expansion has been released since then : Penumbra : Requiem , technically giving the series a third chapter . - Frictional Games AB is an independent video game company located in Helsingborg, Sweden. The developer comprises a small core team and is led by Thomas Grip and Jens Nilsson. Certain key roles such as Music are performed by external staff like Mikko Tarmia. Linux and Mac OS X ports are handled by Edward Rudd. What is the relationship between 'penumbra: overture' and 'mikko tarmia'?
A:
composer