Actually, it's the same ending, but each time it reveals more. Except for the last one, it's an alternative (which also saves you time, cause you only have to redo the game twice instead of three times).
Ending A > B > C or A > B > D.
The story is average until the "midpoint", then there are lots of plot twists and it's f****n amazing.
About the music, it's one of the best soundtracks ever.







