In my case I always like listening to “A whiter shade of pale”, it always works.
Usually the entire soundtrack of the Ori series: Ori and the Blind Forest & Ori and the Will of the Wisps. In particular, my favorites to calm down is “Separated by the Storm” and “Ori, Embracing the Light”
“You Are The Blood”, the Castanets. Maybe it’s the game I first was exposed to it from, but it just sounds like… “It’s all over. Let your muscles go slack, let your trigger finger untense.” It sounds like what I imagine the peace of death to feel like.
Whiter shade of pale is beautiful
Dizzy Wright - Killem Wit Kindness
This song always helps me realize how being upset is really nothing more than a barrier to clear thought and working past differences. Great jam to boot too!
On A Good Day by Oceanlab.
This might sound childish, but there’s an old EP of lullabies that my parents used to play and sing for me long ago. Decades later, I got a copy to play and sing for my own son.
It’s called Golden Slumbers: Lullabies From Near and Far (1956). It’s not available digitally and was never released on CD, so I ripped the EP and posted it to YouTube at the link above. It’s really relaxing.
La Villa Strangiato by Rush
I usually just put it on a Spotify playlist for yoga and relaxation.
A Warm Place by Nine Inch Nails
This is definitely too extreme for most people but I like “Bring Me The Head of The King” by Man Must Die
It’s angry enough for angry me to be okay listening to it but within a minute or so I’m in a better mood because I just like the band.
“on the dock of the bay” by Otis Redding can pretty much make me cry if I’m in the right mood