It has been widely reported that Apple will debut a new streaming radio service at its Worldwide Developers Conference next month. The company was said to be close to striking a deal with Warner Music and Sony Music to launch its iRadio service, however recent reports suggest negotiations may have hit a roadblock that could prevent Apple from debuting the service at next month’s event.

The Verge reports that BMG Rights Management, the fourth largest music publisher, is  not satisfied with the company’s deal and is holding out, therefore leaving Apple with only one major label onboard at this point.

Apple’s streaming music service is said to be a hybrid Web and radio service with features similar to both Pandora and Spotify, but labels reportedly want Apple to pay higher licensing fees than rivals because Apple plans to introduce new functionality that extends beyond similar offerings.

Apple’s Worldwide Developers Conference is scheduled to take place from June 10th to June 14th in San Francisco.