Gustav Soderstrom, Spotify Chief Research and Development Officer (R), shown with Spotify's Troy Carter, Spotify Gustav Soderstrom, Spotify Chief Research and Development Officer (R), shown with Spotify's Troy Carter, Head of Creator Services, said expanding the company's free service is part of the platform's growth strategy

Spotify on Tuesday announced a major expansion of its free service, hoping that a more option-rich platform will boost its ambitions to make music streaming even bigger worldwide.

Weeks after its successful listing on the New York Stock Exchange, the leading streaming company said it saw wide possibilities to grow and identified its free, advertising-backed offering as key to its strategy.

"We know that it's the only way that we are going to be able to achieve our goal of getting billions of fans on the platform and getting the entire music industry to the size that we think it should be," Gustav Soderstrom, the Swedish company's chief research and development officer, told a news conference in New York.

In the first significant redesign of its free tier since 2014, Spotify said that non-paying users will be able to select songs to play on up to 15 playlists—roughly 40 hours of music per day.

Non-subscribers—who earlier had to settle for a shuffle of tracks—can create their own playlists or choose from existing compilations, as well as ones that are automatically generated to adapt to users' tastes.

Spotify said it has also engineered the new free service to take up 75 percent less mobile data to draw in users who have limits on their cellular packages.

It said that users in important emerging markets Brazil, Mexico and Vietnam relied most of the time on wi-fi to listen, indicating concerns over how much data the app eats up.

Spotify unveiled the revamp hours after the industry announced that global revenue from recorded music soared 8.1 percent in 2017—the fastest rate on record.

The third straight year of expansion is almost entirely attributable to Spotify and rival streaming companies such as Deezer, Tidal and the platforms of Apple and Amazon.

Spotify says it had 71 million subscribers at the end of 2017 but that another 90 million used the free service.

Soderstrom said 60 percent of Spotify's paying subscribers initially had used the free tier.

The advertising-backed service—known in the industry as "freemium"—was long controversial among artists and labels who said it amounted to giving away music for free.

But Soderstrom said that Spotify reached new licensing agreements for the expanded freemium.

Once-vocal critics of freemium have since been mollified. Pop superstar Taylor Swift, who once boycotted Spotify, is now tying up with the to release .