Having been at the Wigmore Hall for the concert, right when Lockdown was getting serious, I note with pleasure that I can now watch and listen to the complete Beethoven String Trios, at the Wigmore Hall website.
Neither with orchestral music nor with solo instrumental music does actually seeing it add much, or not for me. But when it comes to chamber music, I find that seeing the musicians communicating the musical meaning of what they’re playing to each other, either by me being there or me watching it on video, can make a big difference.