http://www.songfacts.com/detail.php?id=15716 In 2010, Will.i.am told Rolling Stone: "What is the easiest emotion to act? Anger. What is the hardest? Joy. That's 'cause joy is complex. It's somber, sad, happy, heartbroken, hopeful - it's all these emotions in one. What you hear in 'I Got A Feeling'? To me, that's joy. You're in pain, but tonight's going to be a good night. You can't feel happy when you've been pissed off the whole week. You have to go straight to joy.