Some choice songs for the heat:

Palisade's Park sung by Freddie Cannon...written by that psycho game/gong show guy.
Glamour Boys by Living Colour
She's Like a Rainbow by Rolling Stones

No-No's for the heat (though I may enjoy them on a regular day):
anything with lots of bass i.e. Ol' Dirty Bastard
heavy metal...because heavy is not a good word in the heat...neither is metal. Metal can get hot you know. ouch.

Share with me your songs for heated days.