Music leads emotion, or vice versa?

Music and emotions are inextricably tied. I had a fascinating conversation on the matter last night with a long-time friend who recently got a big promotion. She said she has started to make a conscious effort to listen to upbeat, pop songs on her way to work so that she appears approachable and positive upon arrival. She used to listen to other fare, but her contemplative mood would make her seem distant and aloof. Her moody idealism ended with her college days she seemed to be saying.
Music doesn’t work that way on me, I often feel like the more somber, nostalgic, romantic works. I get happy from being sad, because I don’t let myself fall too far into the abyss. Just feeling any emotion strongly gets my blood flowing, as the child who will ask for even negative attention. It’s the same as most people’s desire to “feel better” by drinking a depressant. I’ve really been getting into the Be Good Tanyas, and even learned to play one my favorite songs last night. Nathan picked out the cords in about 2 measures, and with him on the guitar and me on the mandolin it became quite a jam. It felt good. It also felt good to talk to you Grace, I understand you not needing to rush out and get the CD, but you don’t know what you’re missing!