Humble Indie Bundle 8 includes these games and (most of) their soundtracks : (links go to YouTube videos)

1. Hotline Miami
2. Proteus
3. Little Inferno
4. Awesomenauts
5. Capsized
6. Thomas Was Alone
7. Dear Esther

Hotline Miami

Proteus

Little Inferno

Awesomenauts

Capsized

Thomas Was Alone

Dear Esther