Sorry to “pipe in with that nonsense thing”…there are other applications trying to acheive online jamming which focus more on trying to bring the delay (latency, lag) down. The problem is that a) the internet itself is unpredictable and even good connections introduce delay, and b) from LA to Denver even the speed of light (which, unless you want to contradict Einstein, can’t be overcome) takes roughly 4.5 milliseconds which makes some 9 ms to and back, plus the sum of the latency of your and his audio system, each input and output latencies…most musicians don’t accept that large delays, so it’s going to be difficult.