The way young people are joining communities online, and agreeing and separating themselves and creating their own facts about things like vaccination, is worrying.

I can't sing “I Believe I Can Fly”. I sing that horrible. But I can sing “I Gotta Feeling” good. I wrote it for my capabilities. So I Gotta Feeling is just about let me make a song to inspire people to have a good time.

I'm from east LA. I don't see colour.

When I wrote 'My Humps,' I said, 'This is the stupidest thing ever,' but in a good way. I always wondered what it must be like to be a girl, always gettin' pulled on. Maybe she's the smartest genius on the planet, but she's rackin' double Ds with a 26-inch waist and a big ol' ass and no one's ever gonna see her like that because that's the way the world is today.

If you live in a good neighborhood, you drive home and there's a bank. There's grocery stores and big houses - but no motels. What that tells you psychologically is you protect your money and buy good things for your family to eat in your nice big house.

When you follow your heart, you're never supposed to do things because of what you think people might say. You do it for the opposite reasons.

I don't wanna believe that racism exists, but the more I wish it away, the more I realize it's in our system.