Lady Gaga - Highway Unicorn (Road To Love)
"Blood and Roses" - the Smithereens
Avoid reading the comments, related videos, and descriptions if you haven't played the game in question. The songs themselves don't supply spoilers unless I specify otherwise.
Final Fantasy VI: Grand Finale?
Final Fantasy VI: Techno De Chocobo
Final Fantasy VI: Dancing Mad [Remix] [Major Spoilers in video]
Last Story: Invitation to Madness
Mellon Collie & The Infinite Sadness by The Smashing Pumpkins. I'm currently at Where Boys Fear To Tread.