TelevisionDreams was quite helpful with this :D

• Back to Black by Amy Winehouse
• Bullet by Hollywood Undead
• Card Cheat by The Clash
• Chaconne by Vitali
• Fade to Black by Metallica
• Gloomy Sunday by Billie Holiday (my favorite version)
• Goodbye Cruel World by Pink Floyd
• High Hopes by Pink Floyd
• Hurt by Nine Inch Nails
• I Know It's Over by The Smiths
• Inside the Fire by Disturbed
• Let it Die by Emilie Autumn
• Lux Aeterna by Clint Mansell
• Mr. Self Destruct by Nine Inch Nails
• My Fairweather Friend by Emilie Autumn
• No Rain by Blind Melon
• No Surprises by Radiohead
• Nobody Home by Pink Floyd
• Old Chunk of Coal by John Anderson
• Prelude No. 4 (Suffocation Prelude) by Chopin
• Sail by AWOLNATION
• Saint Veronika by Billy Talent
• Shoestrings by AWOLNATION
• Symphony no. 2 - 3rd Movement by Brodin
• The Great Below by NIN
• The Man Who Sold the World David Bowie and also Nirvana's cover
• The River by Bruce Springsteen
• Where Did You Sleep Last Night recorded by Lead Belly (also Nirvana)
• 306 by Emilie Autumn