European regulators will launch an in-depth investigation of Apple's planned $400m purchase of Shazam, the Music recognition app developed in the UK.
Apple Music has about half as many paid subscribers as Spotify, the world's biggest streaming platform.
Apple said in December that it intended to buy Shazam.
The deal would be the iPhone maker's biggest acquisition since it bought Beats, the headphone maker and music streaming service, for $3bn in 2014. That takeover saw Beats co-founder Jimmy Iovine join Apple Music as a senior executive.
Shazam lets users identify song titles and artists with their smartphone. The app already presents users with links to Apple's iTunes download store to buy songs.
Links to the iPhone maker's music download service generates revenues for Shazam, along with advertising.