There is not much detail there about how the feature will actually be implemented but here are two scenarios:
You see that a friend with a similar taste in music to you listens to song you don’t know so you click to listen in. That would be useful. This integration also could allow your friends to play music for you. (“Hey, listen to this cool song I discovered!”) I find myself sharing links to songs (mostly some video on some video platform) all the time when chatting with friends, so maybe this will be an easier way to do that.
Whether or not this is actually useful depends in my opinion mostly on the UI and how easy to use it is. If it is more tedious than googling for the song and listening to it that way it won’t work.
Spotify already does all of this (with Facebook integration, too). The new feature is supposed to be synchronisation (listening to a song at the same time as your friend).
You see that a friend with a similar taste in music to you listens to song you don’t know so you click to listen in. That would be useful. This integration also could allow your friends to play music for you. (“Hey, listen to this cool song I discovered!”) I find myself sharing links to songs (mostly some video on some video platform) all the time when chatting with friends, so maybe this will be an easier way to do that.
Whether or not this is actually useful depends in my opinion mostly on the UI and how easy to use it is. If it is more tedious than googling for the song and listening to it that way it won’t work.