Uber users can sync their Spotify accounts when hailing an Uber, select a playlist (either their own, or Spotify will have city-specific playlists to choose from) and have the music already playing when they open the car door.
Eventually, Ek and Kalanick say the partnership will spread into all markets they're in. Spotify and Uber are each available in more than 50 cities.
This is Uber's first attempt to make a personalized ride experience for customers, and it probably won't be the last.
"For Uber, we're trying to always create a highly-evolved experience," Kalanick said during a press call. "The opposite of which is the Taxi world that came before us....This is the first time we've personalized the experience inside the car. For music lovers, it's nirvana."
For Spotify, the deal makes a lot of sense. It will encourage Uber's millions of users to start paying for premium Spotify accounts to take advantage of playing DJ. Ek also noted that there are three places people primarily listen to music, and the Uber partnership will help them tackle one of those.
"With Spotify, there are 3 main places people listen to music: In their homes, on the go and in their cars," Ek said. "Uber is such an obvious fit for us."
