The highest-paid musician in the world earned $620 million in 2014. Not even Taylor Swift, Beyonce, or Kanye West have earned as much.

OpenAI CEO Sam Altman is a billionaire, thanks to his investments in technology companies like Reddit, Stripe, Airbnb, and more. Here's how Altman made his money.

The biggest night in music is just days away. Find out how to watch the 67th Annual Grammy Awards, including cable, streaming ...