DtG - I'm out of touch with how well it's progressing,
but online musicians communities have been working on solving latency problems...

Maybe in the not too distant future,
with faster more reliable internet connections,
it may be possible for folks within a reasonable distance from each other
to play together in real-time sessions on line...???

But right now it is possible to work out simple set ups for online turoring and mentoring...

. even auditions...