A strong correlation exists between what you hear and how you feel; this relationship between music and emotions is not new.
Some songs can evoke long-buried emotions, instantly altering your attitude and perspective.
But this goes beyond simple kitchen-table psychology; many studies have examined how music affects the mind.
"Most people have turned to music on occasion to lift their mood, listening to a favourite track to cheer themselves up. "
To learn more:
See: Music Psychology - How Can Songs and Bass Affect Your Mood? By YOTAM DOV