I made a playlist of music to listen to while mellowed
Here's some songs I find fit nicely;

Song - Artist

Little Wing - Hendrix
Next Year - Foo Fighters
Today - Jefferson Airplane
Marry Joanna - My Pet Junkie
Steppenwolf - Magic Carpet Ride
Wear Your Love Like Heaven - Donovan
Incense and Peppermints - Strawberry Alarm Clock
The District Sleeps Alone Tonight - The Postal Service

That's a short list anyway, there's a ton more.