There has been a lot of scientific yakkety-yak lately about the effect music has on the brain, and it seems that the boffins have discovered that a song will light up some parts of one person's brain and different parts of another person's - possibly indicating that we are predisposed to like a certain kind of music, or suggesting that our reaction to music is biological rather than aesthetic? I'm a little bit hazy on the details, but the idea that "music which produces extreme pleasure, or "chills," activates the reward systems in the brain" chimes with me. Music has been the most constant source of pleasure in my life.
I also love the idea of certain songs turning my brain orange. It makes sense to me (orange is my favourite colour*). These are songs that I loved instantly and fervently upon hearing them for the first time; songs that still give me a shiver of pleasure, everytime.
Feeling Good by Nina Simone: Epic.
Sea Lion Woman by Feist: Frenetic.
Cannon Ball by The Breeders: Delirious.
A-Punk by Vampire Weekend: Infectious.
That Teenage Feeling by Neko Case: Vast.
Play Dead by Björk: Kooky.
Tear In Your Hand by Tori Amos: Interstellar.
Homeward Bound by Simon & Garfunkel: Joyful.
Lilac Wine by Jeff Buckley: Heady.
Vicious World by Rufus Wainwright: Silvery.
*Sometimes. Sometimes it's sunflower yellow; sometimes it's bright kermit green, sometimes it's fuschia. But orange is the colour I am most known for using in my designs, so I guess it is the most favoured of the favourites.