The Unnamed Feeling by Metallica - Anger, hopelessness, depression
High Hopes by Pink Floyd - Longing, isolation...
Here Comes The Sun by The Beatles - Happiness!

It's crazy how music can have such a profound effect on our moods. Metallica can be very dangerous for me when I'm in a bad state of mind. Also, anything of Pink Floyd's Division Bell makes me feel like I belong in the loony bin.