[Kayakeenemeds]

. . . That means you won't have someone sitting beside you who wants to move your arms or body for ease of use.

And ... at a solo recital ... my teacher was always present during my rehearsal time for an upcoming organ recital ... offering guidance on registration and any technique changes required because of building acoustics and/or organ console placement. Charles (my teacher) was always there at the program listening and would offer constructive criticism afterwards, which was a very valuable aid, and something that one can't get in an online situation.