Kool and the Gang - Celebration
The most obvious choice, such high quality it tests everything!
But in all seriousness, a little bit of every type of music I listen to ranging from lighter rock, to punk, to hard rock, progressive, metal, acoustic, electronic, and finally the 2 rap songs I listen to.
I like to listen to these specifically:
Jack's Mannequin - Swim
Matt Skiba - Good ****ing Bye
Matt Nathanson - Pretty The World
Rise Against - To Them These Streets Belong (and a bunch of others)
Breaking Benjamin - Diary of Jane
Pendulum - Blood Sugar
Jay-Z - Empire State of Mind
Big L - The Enemy