Depends on what this playlist is for? Working out, wooing a girl?
Oh now you're talking! Melancholy Hill by the Gorillaz Young Blood by The N@ked and Famous Teardrop by Massive Attack Little Secrets by Passion Pit Feel So Close by Calvin Harris Take You Higher by Goodwill HooknSling
Specific songs; Stay-Rihanna, When I Was Your Man-Bruno Mars, Madness-Muse, Somebody Told Me-The Killers and Stop and Stare-One Republic. The Wanted is pretty good, as well as some oldies, like the Beatles if your that kind of guy...have fun!