A song listened to when sad. Sometimes it depends on the cause of sadness, a passing memory, something that is upsetting at the time, being a witness or participant - it all changes the song choice for me. So, I trawled through all my music lists, listened to a few. Then realised one automatically pops into my head - Otherside by Red Hot Chili Peppers. I'd forgotten how much I liked this video too.
The other time this song makes an appearance is when I do my swimming laps - there's a great rhythm in this song that times perfectly with strokes used in swimming up and down a pool. Swimming however does not make me sad. It relaxes me. So, a multipurpose song really.
I use Red Hot Chili Peppers a lot when I'm writing. The music can help me slide into the zone to a point I've no idea how much time has passed by.