Two software instruments from two separate tracks are played at the same time on my midi keyboard ?

Thanks Eddie G. The Track Inspector showed only one instrument playing on each separate track. Your question got me poking around the manuals and found that in the Recording Preferences, there is button to Recording Setup. This setup window has an option to toggle Auto remix to a single track for multi-track recording. Checking this option has eliminated the perceived problem I struggled with one instrument recording and Input playing on multiple tracks.

Being new to Logic, I'm still not sure what toggles the behavior as I have several projects that do not voice one instrument on multiple tracks and the Auto remix button is not checked. I can see that more manual time is calling. Thanks again for responding.