Supergiant Games
Bastion was my game of the year for 2011 (move over, Skyrim!) and the soundtrack was no small part. Blends western-tinged blues and trip-hop beats in a way entirely its own.
Also recommended by Ian Chen, ListenUpMusic, Jacob Harley and 30 others, Mr. Game and Audio, uinku, MAGIX of sound, Michael Barnes, Ektana, Steven Gizzi, Peter Bray, jowiri, Paul Kopetko, eddielagato, Routebent, Audio Fiction, fA113n_ANGEL, CleverProfilePicture, The Lighthouse Keeper, 2d6, Tom Stonock, Dynamic Interplay, Sheado.Net, God Save the Machines, Julius Way, Bashu, timidelfdesigns, Caeh Hatcher, Retronaut42, Vanity Kills, RE:new, Todd Tucker, Ominax and Suspended Animation.