I'm surprised more musicians are not taking advantage of Jamulus. This open-source software, when I looked into it, had already been used by people who want to jam across a distance. The pandemic may have added significant traffic, but I think it's still good. I tried it out with a friend, and depending on your own internet connection (helped by using Ethernet cables), you can almost completely eliminate the lag. There's an online community on Facebook which has some helpful info about getting started (the software itself is not super intuitive). FB group is called Jamulus Online Musicians/Singers Jamming (apologies for no link). Someone will need to set up a server that all musicians (and caller) then join. Almost as good as the real thing. Somehow it is possible to line up video as well through a different platform, though I'm not sure how that's done. Don't ask me for more details because I only tried it out a couple times! And do check to see if it's been overloaded with users since I looked at it a month and a half ago.