Why is it that we associate songs to situations or people? For my music is so powerful and it can change my emotional state quickly. I once had someone look at my playlist and comment that they were really great songs but all sad love songs. This morning on the radio "Someone Like You" by Adele played and though it's a beautiful song it made me so sad for so many reasons. I think we all have those trigger songs that make us sad but we can't stop ourselves from listening to them or even singing along.
The video to the song is also touching: https://youtu.be/hLQl3WQQoQ0