Yes!, Music always change my mood Music is my medicine!! :D

i listen to travis mostly when i m sad.

hi sonia.... your question is really good, i will answer it on psycological way... this is part of human behavior that in state of extreme emotion human needs some one to share his\her feelings.so when you are feeling sad....listening song can give you virtual feeling that some one is understanding you! so your subconcious mind alters the reality..and gives you sensation of relaxation. so listening music can be used as psycotherapy..but with it you should also try to fight against the real reasons of your sadness. this thing will give you true hapiness! the better way can be expressing your sadness and feeling to your close relative! thanks for reading such a long reply..haha!

ofc can, especially pop and rock music XD

Any classic "oldies" song from decades ago (50s-70s). In my opinion, those were the best years for music.