This idea would work in conjunction with starting a group session, but in an easier way. I suggest that we should be able to invite people to group sessions, directly through Spotify.
In the top right corner, after starting a session, there is a plus sign that would be the perfect place for this feature work from. It seems to be for showing who is listening, right now; I don't know, but it could have two parts, one for current listeners, and a section for who you're following, your followers, and a search bar for people that you aren't following or being followed by. Maybe you meet someone on the bus or in a lobby or wherever, and decide to have a quick session. It would come in handy, because there's no obligation to follow each other, and none to give out phone numbers or social media information, just to share music with each other.
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