This means that Apple Music subscribers will be able to use the feature within Messenger itself. For those who are unfamiliar with the Facebook Messenger Song Sharing feature, it basically allows users to share snippets of songs with their friends, so if you’re trying to entice a friend to check out a song, sharing a snippet of it could help. Alternatively you could always link to a YouTube version of it which is typically a full version of the song, but if you’d rather not then this is an alternative.
In addition to Apple Music, other music streaming platforms that will be integrated into the Song Sharing feature will be Spotify which will be available at the launch of the app, while Apple Music’s integration is expected to come at a later date. We’re not sure if there will be more platforms added in the future, but for now it looks like Apple Music and Spotify will be the only two platforms available that can take advantage of Facebook Messenger’s new feature.