music is what drives me. i'm a singer. and huge on lyrics.
some of my faves that put me in a good mood are:

Breathe (2am) - Anna Nalick (calms me)
Hey Mama - Black Eyed Peas (makes you wanna dance!)
Life in Technicolor II - Coldplay (makes me smile )
American Boy - Estelle (just super fun and great to sing)
Be Faithful - Fatman Scoop and Crooklyn Clan (wicked dance song)
Take Me Out - Franz Ferdinand (fun song)
Empire State - Jay-Z and Alicia Keys (awesome)
Are You Gonna Be My Girl - Jet (how can u not like this song? lol)
One Step at a Time - Jordin Sparks (calms my stress, puts things in perspective, great to sing.)
Mr. Brightside - The Killers (love it)
Smile - Lily Allen (seems obvious. haha)
Kids - MGMT (wicked dance song)
Famous Last Words - My Chemical Romance (great for getting out aggression)
Cuz I Can - Pink (wicked)
It's All Your Fault - Pink (just fun)
Bicycle Race - Queen (hahahaha love it! )
Can't Stop - Red Hot Chili Peppers (fun!)
Please Don't Stop The Music - Rhianna (u already know it's good!haha)
Beautiful - Social Code (just listened to this for the first time in ages, sooo good to pump you up! instantly boosted my mood)
Heads Will Roll - Yeah Yeah Yeahs (wicked)

and pretty much anything by Rise Against cuz i friggin LOVE them.

that's just a bit of mine. could prolly find more, but i gotta get going. hope it helps!