You may have heard about, or perhaps explored yourself, JamKazam as a possible means to jam with others while we wait out the coronapocalypse. I’ve been using it for a week or so now, as have many others, and I have had some delightful jams with musicians all over the country. It CAN work, though it won’t always work and it won’t work for everyone. (The interface is clunky and a bit inconsistent right now.) Also I’m under the impression that the developers are working continuously on it now, and making improvements all the time. If you tried it in March and it didn’t work for you, it’s a whole different ballgame now - try it again.
So if you’re interested in on-line jamming, do check out JamKazam. Please don’t be intimidated by how “tech” it sounds - it’s not difficult if one takes it step by step, although it does require a high speed Internet connection with an Ethernet cable (not wi-fi), and it appears to require (I don’t know of anyone not using these) an audio interface, microphone for acoustic instruments, and headphones to eliminate feedback. If you have an electric instrument I’m not familiar with how that changes the requirements.
If there’s enough interest on this forum I will post a more detailed, step-by-step guide. (BTW, I am not affiliated with JK or with Strum Machine! I’m just a retired lawyer who took up bluegrass fiddle a year and a half ago and may someday be good enough that everyone doesn’t run out of the room.)
It’s also worth noting, and actually why I came here (thanks for the suggestion, Luke!), that, in last night’s bluegrass session with musicians from coast to coast, we used Strum Machine for our bass because we didn’t have a bass, and it worked really well. One of the jammers just fired up the chosen song on Strum Machine and voila, we had a bass.